Autor: |
Meyer L; From the Department of Diagnostic and Interventional Neuroradiology, University Medical Center Hamburg-Eppendorf, Martinistrasse 52, 20246 Hamburg, Germany (L.M., P.S., G.B., P.S., J.F., U.H.); Department of Interventional Neuroradiology, University Hospital Muenster, Muenster, Germany (P.S., M.E.); Department of Endovascular Therapy, Alfried-Krupp Hospital Essen, Essen, Germany (R.C.); Department of Diagnostic and Interventional Neuroradiology, University Hospital Basel, Basel, Switzerland (P.S., M.P.); Institute of Diagnostic and Interventional Neuroradiology, Inselspital, Bern University Hospital, University of Bern, Switzerland (E.I.P., J.K.); Department of Diagnostic and Interventional Neuroradiology, Klinikum rechts der Isar, School of Medicine, Technical University Munich, Munich, Germany (C.M., M.R.H.P.); Institute of Neuroradiology, University Hospitals, LMU Munich, Munich, Germany (H.Z., F.D.); Department of Neuroradiology, University of Cologne, Cologne, Germany (N.A., C.K.); Department of Neuroradiology, University Hospital Magdeburg, Magdeburg, Germany (E.D., M.T.); Department of Diagnostic Radiology and Interventional Neuroradiology and Nuclear Medicine, Universitätsklinikum Knappschaftskrankenhaus Bochum, Universitätsklinik der Ruhr-Universität Bochum, Bochum Germany (V.M., S.F.); Department of Neuroradiology, Heidelberg University Hospital, Heidelberg, Germany (M. Möhlenbruch, C.S.W.); Department of Diagnostic and Interventional Neuroradiology, University Medical Centre Goettingen, Goettingen, Germany (M.E., A.J.); Department of Interventional Neuroradiology, Johanna Étienne Hospital, Neuss, Germany (D.M.); Institute of Neuroradiology, Charité Universitätsmedizin Berlin, Berlin, Germany (M. Miszczuk, E.S.); Department of Radiology, Klinikum Osnabrück, Osnabrück, Germany (S.L.); Department of Neurology, Klinikum Osnabrück, Osnabrück, Germany (L.U.K.); Division of Neurology, Department of Medicine, National University Health System, Singapore (L.Y., B.T.); Yong Loo Lin School of Medicine, National University of Singapore, Singapore (L.Y., B.T., A.G.); Division of Interventional Radiology, Department of Diagnostic imaging, National University Health System, Singapore (A.G.); Department of Neuroradiology, University Hospital Bonn, Bonn, Germany (F.D.); Department of Interventional Neuroradiology, Hospital Clínico Universitario de Valladolid, Valladolid, Spain (M.M.G.); Department of Radiology, New York Langone Medical Center, New York, NY (E.R., M.S.); Department of Neuroradiology, Karolinska University Hospital and Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden (F.A., T.A.); Department of Medical Imaging, AZ Groeninge, Kortrijk, Belgium (T.A.); Department of Neurology, Hospital Bremen-Mitte, Bremen, Germany (A. Kastrup); Department of Diagnostic and Interventional Neuroradiology, Hospital Bremen-Mitte, Bremen, Germany (M.A., P.P.); Department of Radiology, Areteion University Hospital, National and Kapodistrian University of Athens, Athens, Greece (P.P.); Department of Neuroradiology, Westpfalz-Klinikum, Kaiserslautern, Germany (W.N.); Department of Neuroradiology, University Hospital Luebeck, Germany (W.N.); Department of Radiology, Comenius University's Jessenius Faculty of Medicine and University Hospital, Martin, Slovakia (K.Z.); Department of Neuroradiology, Hospital Universitario La Paz, Madrid, Spain (P.N.); Department of Neuroradiology, University Hospital Marburg, Marburg, Germany (A. Kemmling); and Stroke Unit, Hospital Clínico Universitario de Valladolid, Valladolid, Spain (J.F.A.L.)., Stracke P; From the Department of Diagnostic and Interventional Neuroradiology, University Medical Center Hamburg-Eppendorf, Martinistrasse 52, 20246 Hamburg, Germany (L.M., P.S., G.B., P.S., J.F., U.H.); Department of Interventional Neuroradiology, University Hospital Muenster, Muenster, Germany (P.S., M.E.); Department of Endovascular Therapy, Alfried-Krupp Hospital Essen, Essen, Germany (R.C.); Department of Diagnostic and Interventional Neuroradiology, University Hospital Basel, Basel, Switzerland (P.S., M.P.); Institute of Diagnostic and Interventional Neuroradiology, Inselspital, Bern University Hospital, University of Bern, Switzerland (E.I.P., J.K.); Department of Diagnostic and Interventional Neuroradiology, Klinikum rechts der Isar, School of Medicine, Technical University Munich, Munich, Germany (C.M., M.R.H.P.); Institute of Neuroradiology, University Hospitals, LMU Munich, Munich, Germany (H.Z., F.D.); Department of Neuroradiology, University of Cologne, Cologne, Germany (N.A., C.K.); Department of Neuroradiology, University Hospital Magdeburg, Magdeburg, Germany (E.D., M.T.); Department of Diagnostic Radiology and Interventional Neuroradiology and Nuclear Medicine, Universitätsklinikum Knappschaftskrankenhaus Bochum, Universitätsklinik der Ruhr-Universität Bochum, Bochum Germany (V.M., S.F.); Department of Neuroradiology, Heidelberg University Hospital, Heidelberg, Germany (M. Möhlenbruch, C.S.W.); Department of Diagnostic and Interventional Neuroradiology, University Medical Centre Goettingen, Goettingen, Germany (M.E., A.J.); Department of Interventional Neuroradiology, Johanna Étienne Hospital, Neuss, Germany (D.M.); Institute of Neuroradiology, Charité Universitätsmedizin Berlin, Berlin, Germany (M. Miszczuk, E.S.); Department of Radiology, Klinikum Osnabrück, Osnabrück, Germany (S.L.); Department of Neurology, Klinikum Osnabrück, Osnabrück, Germany (L.U.K.); Division of Neurology, Department of Medicine, National University Health System, Singapore (L.Y., B.T.); Yong Loo Lin School of Medicine, National University of Singapore, Singapore (L.Y., B.T., A.G.); Division of Interventional Radiology, Department of Diagnostic imaging, National University Health System, Singapore (A.G.); Department of Neuroradiology, University Hospital Bonn, Bonn, Germany (F.D.); Department of Interventional Neuroradiology, Hospital Clínico Universitario de Valladolid, Valladolid, Spain (M.M.G.); Department of Radiology, New York Langone Medical Center, New York, NY (E.R., M.S.); Department of Neuroradiology, Karolinska University Hospital and Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden (F.A., T.A.); Department of Medical Imaging, AZ Groeninge, Kortrijk, Belgium (T.A.); Department of Neurology, Hospital Bremen-Mitte, Bremen, Germany (A. Kastrup); Department of Diagnostic and Interventional Neuroradiology, Hospital Bremen-Mitte, Bremen, Germany (M.A., P.P.); Department of Radiology, Areteion University Hospital, National and Kapodistrian University of Athens, Athens, Greece (P.P.); Department of Neuroradiology, Westpfalz-Klinikum, Kaiserslautern, Germany (W.N.); Department of Neuroradiology, University Hospital Luebeck, Germany (W.N.); Department of Radiology, Comenius University's Jessenius Faculty of Medicine and University Hospital, Martin, Slovakia (K.Z.); Department of Neuroradiology, Hospital Universitario La Paz, Madrid, Spain (P.N.); Department of Neuroradiology, University Hospital Marburg, Marburg, Germany (A. Kemmling); and Stroke Unit, Hospital Clínico Universitario de Valladolid, Valladolid, Spain (J.F.A.L.)., Broocks G; From the Department of Diagnostic and Interventional Neuroradiology, University Medical Center Hamburg-Eppendorf, Martinistrasse 52, 20246 Hamburg, Germany (L.M., P.S., G.B., P.S., J.F., U.H.); Department of Interventional Neuroradiology, University Hospital Muenster, Muenster, Germany (P.S., M.E.); Department of Endovascular Therapy, Alfried-Krupp Hospital Essen, Essen, Germany (R.C.); Department of Diagnostic and Interventional Neuroradiology, University Hospital Basel, Basel, Switzerland (P.S., M.P.); Institute of Diagnostic and Interventional Neuroradiology, Inselspital, Bern University Hospital, University of Bern, Switzerland (E.I.P., J.K.); Department of Diagnostic and Interventional Neuroradiology, Klinikum rechts der Isar, School of Medicine, Technical University Munich, Munich, Germany (C.M., M.R.H.P.); Institute of Neuroradiology, University Hospitals, LMU Munich, Munich, Germany (H.Z., F.D.); Department of Neuroradiology, University of Cologne, Cologne, Germany (N.A., C.K.); Department of Neuroradiology, University Hospital Magdeburg, Magdeburg, Germany (E.D., M.T.); Department of Diagnostic Radiology and Interventional Neuroradiology and Nuclear Medicine, Universitätsklinikum Knappschaftskrankenhaus Bochum, Universitätsklinik der Ruhr-Universität Bochum, Bochum Germany (V.M., S.F.); Department of Neuroradiology, Heidelberg University Hospital, Heidelberg, Germany (M. Möhlenbruch, C.S.W.); Department of Diagnostic and Interventional Neuroradiology, University Medical Centre Goettingen, Goettingen, Germany (M.E., A.J.); Department of Interventional Neuroradiology, Johanna Étienne Hospital, Neuss, Germany (D.M.); Institute of Neuroradiology, Charité Universitätsmedizin Berlin, Berlin, Germany (M. Miszczuk, E.S.); Department of Radiology, Klinikum Osnabrück, Osnabrück, Germany (S.L.); Department of Neurology, Klinikum Osnabrück, Osnabrück, Germany (L.U.K.); Division of Neurology, Department of Medicine, National University Health System, Singapore (L.Y., B.T.); Yong Loo Lin School of Medicine, National University of Singapore, Singapore (L.Y., B.T., A.G.); Division of Interventional Radiology, Department of Diagnostic imaging, National University Health System, Singapore (A.G.); Department of Neuroradiology, University Hospital Bonn, Bonn, Germany (F.D.); Department of Interventional Neuroradiology, Hospital Clínico Universitario de Valladolid, Valladolid, Spain (M.M.G.); Department of Radiology, New York Langone Medical Center, New York, NY (E.R., M.S.); Department of Neuroradiology, Karolinska University Hospital and Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden (F.A., T.A.); Department of Medical Imaging, AZ Groeninge, Kortrijk, Belgium (T.A.); Department of Neurology, Hospital Bremen-Mitte, Bremen, Germany (A. Kastrup); Department of Diagnostic and Interventional Neuroradiology, Hospital Bremen-Mitte, Bremen, Germany (M.A., P.P.); Department of Radiology, Areteion University Hospital, National and Kapodistrian University of Athens, Athens, Greece (P.P.); Department of Neuroradiology, Westpfalz-Klinikum, Kaiserslautern, Germany (W.N.); Department of Neuroradiology, University Hospital Luebeck, Germany (W.N.); Department of Radiology, Comenius University's Jessenius Faculty of Medicine and University Hospital, Martin, Slovakia (K.Z.); Department of Neuroradiology, Hospital Universitario La Paz, Madrid, Spain (P.N.); Department of Neuroradiology, University Hospital Marburg, Marburg, Germany (A. Kemmling); and Stroke Unit, Hospital Clínico Universitario de Valladolid, Valladolid, Spain (J.F.A.L.)., Elsharkawy M; From the Department of Diagnostic and Interventional Neuroradiology, University Medical Center Hamburg-Eppendorf, Martinistrasse 52, 20246 Hamburg, Germany (L.M., P.S., G.B., P.S., J.F., U.H.); Department of Interventional Neuroradiology, University Hospital Muenster, Muenster, Germany (P.S., M.E.); Department of Endovascular Therapy, Alfried-Krupp Hospital Essen, Essen, Germany (R.C.); Department of Diagnostic and Interventional Neuroradiology, University Hospital Basel, Basel, Switzerland (P.S., M.P.); Institute of Diagnostic and Interventional Neuroradiology, Inselspital, Bern University Hospital, University of Bern, Switzerland (E.I.P., J.K.); Department of Diagnostic and Interventional Neuroradiology, Klinikum rechts der Isar, School of Medicine, Technical University Munich, Munich, Germany (C.M., M.R.H.P.); Institute of Neuroradiology, University Hospitals, LMU Munich, Munich, Germany (H.Z., F.D.); Department of Neuroradiology, University of Cologne, Cologne, Germany (N.A., C.K.); Department of Neuroradiology, University Hospital Magdeburg, Magdeburg, Germany (E.D., M.T.); Department of Diagnostic Radiology and Interventional Neuroradiology and Nuclear Medicine, Universitätsklinikum Knappschaftskrankenhaus Bochum, Universitätsklinik der Ruhr-Universität Bochum, Bochum Germany (V.M., S.F.); Department of Neuroradiology, Heidelberg University Hospital, Heidelberg, Germany (M. Möhlenbruch, C.S.W.); Department of Diagnostic and Interventional Neuroradiology, University Medical Centre Goettingen, Goettingen, Germany (M.E., A.J.); Department of Interventional Neuroradiology, Johanna Étienne Hospital, Neuss, Germany (D.M.); Institute of Neuroradiology, Charité Universitätsmedizin Berlin, Berlin, Germany (M. Miszczuk, E.S.); Department of Radiology, Klinikum Osnabrück, Osnabrück, Germany (S.L.); Department of Neurology, Klinikum Osnabrück, Osnabrück, Germany (L.U.K.); Division of Neurology, Department of Medicine, National University Health System, Singapore (L.Y., B.T.); Yong Loo Lin School of Medicine, National University of Singapore, Singapore (L.Y., B.T., A.G.); Division of Interventional Radiology, Department of Diagnostic imaging, National University Health System, Singapore (A.G.); Department of Neuroradiology, University Hospital Bonn, Bonn, Germany (F.D.); Department of Interventional Neuroradiology, Hospital Clínico Universitario de Valladolid, Valladolid, Spain (M.M.G.); Department of Radiology, New York Langone Medical Center, New York, NY (E.R., M.S.); Department of Neuroradiology, Karolinska University Hospital and Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden (F.A., T.A.); Department of Medical Imaging, AZ Groeninge, Kortrijk, Belgium (T.A.); Department of Neurology, Hospital Bremen-Mitte, Bremen, Germany (A. Kastrup); Department of Diagnostic and Interventional Neuroradiology, Hospital Bremen-Mitte, Bremen, Germany (M.A., P.P.); Department of Radiology, Areteion University Hospital, National and Kapodistrian University of Athens, Athens, Greece (P.P.); Department of Neuroradiology, Westpfalz-Klinikum, Kaiserslautern, Germany (W.N.); Department of Neuroradiology, University Hospital Luebeck, Germany (W.N.); Department of Radiology, Comenius University's Jessenius Faculty of Medicine and University Hospital, Martin, Slovakia (K.Z.); Department of Neuroradiology, Hospital Universitario La Paz, Madrid, Spain (P.N.); Department of Neuroradiology, University Hospital Marburg, Marburg, Germany (A. Kemmling); and Stroke Unit, Hospital Clínico Universitario de Valladolid, Valladolid, Spain (J.F.A.L.)., Sporns P; From the Department of Diagnostic and Interventional Neuroradiology, University Medical Center Hamburg-Eppendorf, Martinistrasse 52, 20246 Hamburg, Germany (L.M., P.S., G.B., P.S., J.F., U.H.); Department of Interventional Neuroradiology, University Hospital Muenster, Muenster, Germany (P.S., M.E.); Department of Endovascular Therapy, Alfried-Krupp Hospital Essen, Essen, Germany (R.C.); Department of Diagnostic and Interventional Neuroradiology, University Hospital Basel, Basel, Switzerland (P.S., M.P.); Institute of Diagnostic and Interventional Neuroradiology, Inselspital, Bern University Hospital, University of Bern, Switzerland (E.I.P., J.K.); Department of Diagnostic and Interventional Neuroradiology, Klinikum rechts der Isar, School of Medicine, Technical University Munich, Munich, Germany (C.M., M.R.H.P.); Institute of Neuroradiology, University Hospitals, LMU Munich, Munich, Germany (H.Z., F.D.); Department of Neuroradiology, University of Cologne, Cologne, Germany (N.A., C.K.); Department of Neuroradiology, University Hospital Magdeburg, Magdeburg, Germany (E.D., M.T.); Department of Diagnostic Radiology and Interventional Neuroradiology and Nuclear Medicine, Universitätsklinikum Knappschaftskrankenhaus Bochum, Universitätsklinik der Ruhr-Universität Bochum, Bochum Germany (V.M., S.F.); Department of Neuroradiology, Heidelberg University Hospital, Heidelberg, Germany (M. Möhlenbruch, C.S.W.); Department of Diagnostic and Interventional Neuroradiology, University Medical Centre Goettingen, Goettingen, Germany (M.E., A.J.); Department of Interventional Neuroradiology, Johanna Étienne Hospital, Neuss, Germany (D.M.); Institute of Neuroradiology, Charité Universitätsmedizin Berlin, Berlin, Germany (M. Miszczuk, E.S.); Department of Radiology, Klinikum Osnabrück, Osnabrück, Germany (S.L.); Department of Neurology, Klinikum Osnabrück, Osnabrück, Germany (L.U.K.); Division of Neurology, Department of Medicine, National University Health System, Singapore (L.Y., B.T.); Yong Loo Lin School of Medicine, National University of Singapore, Singapore (L.Y., B.T., A.G.); Division of Interventional Radiology, Department of Diagnostic imaging, National University Health System, Singapore (A.G.); Department of Neuroradiology, University Hospital Bonn, Bonn, Germany (F.D.); Department of Interventional Neuroradiology, Hospital Clínico Universitario de Valladolid, Valladolid, Spain (M.M.G.); Department of Radiology, New York Langone Medical Center, New York, NY (E.R., M.S.); Department of Neuroradiology, Karolinska University Hospital and Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden (F.A., T.A.); Department of Medical Imaging, AZ Groeninge, Kortrijk, Belgium (T.A.); Department of Neurology, Hospital Bremen-Mitte, Bremen, Germany (A. Kastrup); Department of Diagnostic and Interventional Neuroradiology, Hospital Bremen-Mitte, Bremen, Germany (M.A., P.P.); Department of Radiology, Areteion University Hospital, National and Kapodistrian University of Athens, Athens, Greece (P.P.); Department of Neuroradiology, Westpfalz-Klinikum, Kaiserslautern, Germany (W.N.); Department of Neuroradiology, University Hospital Luebeck, Germany (W.N.); Department of Radiology, Comenius University's Jessenius Faculty of Medicine and University Hospital, Martin, Slovakia (K.Z.); Department of Neuroradiology, Hospital Universitario La Paz, Madrid, Spain (P.N.); Department of Neuroradiology, University Hospital Marburg, Marburg, Germany (A. Kemmling); and Stroke Unit, Hospital Clínico Universitario de Valladolid, Valladolid, Spain (J.F.A.L.)., Piechowiak EI; From the Department of Diagnostic and Interventional Neuroradiology, University Medical Center Hamburg-Eppendorf, Martinistrasse 52, 20246 Hamburg, Germany (L.M., P.S., G.B., P.S., J.F., U.H.); Department of Interventional Neuroradiology, University Hospital Muenster, Muenster, Germany (P.S., M.E.); Department of Endovascular Therapy, Alfried-Krupp Hospital Essen, Essen, Germany (R.C.); Department of Diagnostic and Interventional Neuroradiology, University Hospital Basel, Basel, Switzerland (P.S., M.P.); Institute of Diagnostic and Interventional Neuroradiology, Inselspital, Bern University Hospital, University of Bern, Switzerland (E.I.P., J.K.); Department of Diagnostic and Interventional Neuroradiology, Klinikum rechts der Isar, School of Medicine, Technical University Munich, Munich, Germany (C.M., M.R.H.P.); Institute of Neuroradiology, University Hospitals, LMU Munich, Munich, Germany (H.Z., F.D.); Department of Neuroradiology, University of Cologne, Cologne, Germany (N.A., C.K.); Department of Neuroradiology, University Hospital Magdeburg, Magdeburg, Germany (E.D., M.T.); Department of Diagnostic Radiology and Interventional Neuroradiology and Nuclear Medicine, Universitätsklinikum Knappschaftskrankenhaus Bochum, Universitätsklinik der Ruhr-Universität Bochum, Bochum Germany (V.M., S.F.); Department of Neuroradiology, Heidelberg University Hospital, Heidelberg, Germany (M. Möhlenbruch, C.S.W.); Department of Diagnostic and Interventional Neuroradiology, University Medical Centre Goettingen, Goettingen, Germany (M.E., A.J.); Department of Interventional Neuroradiology, Johanna Étienne Hospital, Neuss, Germany (D.M.); Institute of Neuroradiology, Charité Universitätsmedizin Berlin, Berlin, Germany (M. Miszczuk, E.S.); Department of Radiology, Klinikum Osnabrück, Osnabrück, Germany (S.L.); Department of Neurology, Klinikum Osnabrück, Osnabrück, Germany (L.U.K.); Division of Neurology, Department of Medicine, National University Health System, Singapore (L.Y., B.T.); Yong Loo Lin School of Medicine, National University of Singapore, Singapore (L.Y., B.T., A.G.); Division of Interventional Radiology, Department of Diagnostic imaging, National University Health System, Singapore (A.G.); Department of Neuroradiology, University Hospital Bonn, Bonn, Germany (F.D.); Department of Interventional Neuroradiology, Hospital Clínico Universitario de Valladolid, Valladolid, Spain (M.M.G.); Department of Radiology, New York Langone Medical Center, New York, NY (E.R., M.S.); Department of Neuroradiology, Karolinska University Hospital and Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden (F.A., T.A.); Department of Medical Imaging, AZ Groeninge, Kortrijk, Belgium (T.A.); Department of Neurology, Hospital Bremen-Mitte, Bremen, Germany (A. Kastrup); Department of Diagnostic and Interventional Neuroradiology, Hospital Bremen-Mitte, Bremen, Germany (M.A., P.P.); Department of Radiology, Areteion University Hospital, National and Kapodistrian University of Athens, Athens, Greece (P.P.); Department of Neuroradiology, Westpfalz-Klinikum, Kaiserslautern, Germany (W.N.); Department of Neuroradiology, University Hospital Luebeck, Germany (W.N.); Department of Radiology, Comenius University's Jessenius Faculty of Medicine and University Hospital, Martin, Slovakia (K.Z.); Department of Neuroradiology, Hospital Universitario La Paz, Madrid, Spain (P.N.); Department of Neuroradiology, University Hospital Marburg, Marburg, Germany (A. Kemmling); and Stroke Unit, Hospital Clínico Universitario de Valladolid, Valladolid, Spain (J.F.A.L.)., Kaesmacher J; From the Department of Diagnostic and Interventional Neuroradiology, University Medical Center Hamburg-Eppendorf, Martinistrasse 52, 20246 Hamburg, Germany (L.M., P.S., G.B., P.S., J.F., U.H.); Department of Interventional Neuroradiology, University Hospital Muenster, Muenster, Germany (P.S., M.E.); Department of Endovascular Therapy, Alfried-Krupp Hospital Essen, Essen, Germany (R.C.); Department of Diagnostic and Interventional Neuroradiology, University Hospital Basel, Basel, Switzerland (P.S., M.P.); Institute of Diagnostic and Interventional Neuroradiology, Inselspital, Bern University Hospital, University of Bern, Switzerland (E.I.P., J.K.); Department of Diagnostic and Interventional Neuroradiology, Klinikum rechts der Isar, School of Medicine, Technical University Munich, Munich, Germany (C.M., M.R.H.P.); Institute of Neuroradiology, University Hospitals, LMU Munich, Munich, Germany (H.Z., F.D.); Department of Neuroradiology, University of Cologne, Cologne, Germany (N.A., C.K.); Department of Neuroradiology, University Hospital Magdeburg, Magdeburg, Germany (E.D., M.T.); Department of Diagnostic Radiology and Interventional Neuroradiology and Nuclear Medicine, Universitätsklinikum Knappschaftskrankenhaus Bochum, Universitätsklinik der Ruhr-Universität Bochum, Bochum Germany (V.M., S.F.); Department of Neuroradiology, Heidelberg University Hospital, Heidelberg, Germany (M. Möhlenbruch, C.S.W.); Department of Diagnostic and Interventional Neuroradiology, University Medical Centre Goettingen, Goettingen, Germany (M.E., A.J.); Department of Interventional Neuroradiology, Johanna Étienne Hospital, Neuss, Germany (D.M.); Institute of Neuroradiology, Charité Universitätsmedizin Berlin, Berlin, Germany (M. Miszczuk, E.S.); Department of Radiology, Klinikum Osnabrück, Osnabrück, Germany (S.L.); Department of Neurology, Klinikum Osnabrück, Osnabrück, Germany (L.U.K.); Division of Neurology, Department of Medicine, National University Health System, Singapore (L.Y., B.T.); Yong Loo Lin School of Medicine, National University of Singapore, Singapore (L.Y., B.T., A.G.); Division of Interventional Radiology, Department of Diagnostic imaging, National University Health System, Singapore (A.G.); Department of Neuroradiology, University Hospital Bonn, Bonn, Germany (F.D.); Department of Interventional Neuroradiology, Hospital Clínico Universitario de Valladolid, Valladolid, Spain (M.M.G.); Department of Radiology, New York Langone Medical Center, New York, NY (E.R., M.S.); Department of Neuroradiology, Karolinska University Hospital and Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden (F.A., T.A.); Department of Medical Imaging, AZ Groeninge, Kortrijk, Belgium (T.A.); Department of Neurology, Hospital Bremen-Mitte, Bremen, Germany (A. Kastrup); Department of Diagnostic and Interventional Neuroradiology, Hospital Bremen-Mitte, Bremen, Germany (M.A., P.P.); Department of Radiology, Areteion University Hospital, National and Kapodistrian University of Athens, Athens, Greece (P.P.); Department of Neuroradiology, Westpfalz-Klinikum, Kaiserslautern, Germany (W.N.); Department of Neuroradiology, University Hospital Luebeck, Germany (W.N.); Department of Radiology, Comenius University's Jessenius Faculty of Medicine and University Hospital, Martin, Slovakia (K.Z.); Department of Neuroradiology, Hospital Universitario La Paz, Madrid, Spain (P.N.); Department of Neuroradiology, University Hospital Marburg, Marburg, Germany (A. Kemmling); and Stroke Unit, Hospital Clínico Universitario de Valladolid, Valladolid, Spain (J.F.A.L.)., Maegerlein C; From the Department of Diagnostic and Interventional Neuroradiology, University Medical Center Hamburg-Eppendorf, Martinistrasse 52, 20246 Hamburg, Germany (L.M., P.S., G.B., P.S., J.F., U.H.); Department of Interventional Neuroradiology, University Hospital Muenster, Muenster, Germany (P.S., M.E.); Department of Endovascular Therapy, Alfried-Krupp Hospital Essen, Essen, Germany (R.C.); Department of Diagnostic and Interventional Neuroradiology, University Hospital Basel, Basel, Switzerland (P.S., M.P.); Institute of Diagnostic and Interventional Neuroradiology, Inselspital, Bern University Hospital, University of Bern, Switzerland (E.I.P., J.K.); Department of Diagnostic and Interventional Neuroradiology, Klinikum rechts der Isar, School of Medicine, Technical University Munich, Munich, Germany (C.M., M.R.H.P.); Institute of Neuroradiology, University Hospitals, LMU Munich, Munich, Germany (H.Z., F.D.); Department of Neuroradiology, University of Cologne, Cologne, Germany (N.A., C.K.); Department of Neuroradiology, University Hospital Magdeburg, Magdeburg, Germany (E.D., M.T.); Department of Diagnostic Radiology and Interventional Neuroradiology and Nuclear Medicine, Universitätsklinikum Knappschaftskrankenhaus Bochum, Universitätsklinik der Ruhr-Universität Bochum, Bochum Germany (V.M., S.F.); Department of Neuroradiology, Heidelberg University Hospital, Heidelberg, Germany (M. Möhlenbruch, C.S.W.); Department of Diagnostic and Interventional Neuroradiology, University Medical Centre Goettingen, Goettingen, Germany (M.E., A.J.); Department of Interventional Neuroradiology, Johanna Étienne Hospital, Neuss, Germany (D.M.); Institute of Neuroradiology, Charité Universitätsmedizin Berlin, Berlin, Germany (M. Miszczuk, E.S.); Department of Radiology, Klinikum Osnabrück, Osnabrück, Germany (S.L.); Department of Neurology, Klinikum Osnabrück, Osnabrück, Germany (L.U.K.); Division of Neurology, Department of Medicine, National University Health System, Singapore (L.Y., B.T.); Yong Loo Lin School of Medicine, National University of Singapore, Singapore (L.Y., B.T., A.G.); Division of Interventional Radiology, Department of Diagnostic imaging, National University Health System, Singapore (A.G.); Department of Neuroradiology, University Hospital Bonn, Bonn, Germany (F.D.); Department of Interventional Neuroradiology, Hospital Clínico Universitario de Valladolid, Valladolid, Spain (M.M.G.); Department of Radiology, New York Langone Medical Center, New York, NY (E.R., M.S.); Department of Neuroradiology, Karolinska University Hospital and Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden (F.A., T.A.); Department of Medical Imaging, AZ Groeninge, Kortrijk, Belgium (T.A.); Department of Neurology, Hospital Bremen-Mitte, Bremen, Germany (A. Kastrup); Department of Diagnostic and Interventional Neuroradiology, Hospital Bremen-Mitte, Bremen, Germany (M.A., P.P.); Department of Radiology, Areteion University Hospital, National and Kapodistrian University of Athens, Athens, Greece (P.P.); Department of Neuroradiology, Westpfalz-Klinikum, Kaiserslautern, Germany (W.N.); Department of Neuroradiology, University Hospital Luebeck, Germany (W.N.); Department of Radiology, Comenius University's Jessenius Faculty of Medicine and University Hospital, Martin, Slovakia (K.Z.); Department of Neuroradiology, Hospital Universitario La Paz, Madrid, Spain (P.N.); Department of Neuroradiology, University Hospital Marburg, Marburg, Germany (A. Kemmling); and Stroke Unit, Hospital Clínico Universitario de Valladolid, Valladolid, Spain (J.F.A.L.)., Hernandez Petzsche MR; From the Department of Diagnostic and Interventional Neuroradiology, University Medical Center Hamburg-Eppendorf, Martinistrasse 52, 20246 Hamburg, Germany (L.M., P.S., G.B., P.S., J.F., U.H.); Department of Interventional Neuroradiology, University Hospital Muenster, Muenster, Germany (P.S., M.E.); Department of Endovascular Therapy, Alfried-Krupp Hospital Essen, Essen, Germany (R.C.); Department of Diagnostic and Interventional Neuroradiology, University Hospital Basel, Basel, Switzerland (P.S., M.P.); Institute of Diagnostic and Interventional Neuroradiology, Inselspital, Bern University Hospital, University of Bern, Switzerland (E.I.P., J.K.); Department of Diagnostic and Interventional Neuroradiology, Klinikum rechts der Isar, School of Medicine, Technical University Munich, Munich, Germany (C.M., M.R.H.P.); Institute of Neuroradiology, University Hospitals, LMU Munich, Munich, Germany (H.Z., F.D.); Department of Neuroradiology, University of Cologne, Cologne, Germany (N.A., C.K.); Department of Neuroradiology, University Hospital Magdeburg, Magdeburg, Germany (E.D., M.T.); Department of Diagnostic Radiology and Interventional Neuroradiology and Nuclear Medicine, Universitätsklinikum Knappschaftskrankenhaus Bochum, Universitätsklinik der Ruhr-Universität Bochum, Bochum Germany (V.M., S.F.); Department of Neuroradiology, Heidelberg University Hospital, Heidelberg, Germany (M. Möhlenbruch, C.S.W.); Department of Diagnostic and Interventional Neuroradiology, University Medical Centre Goettingen, Goettingen, Germany (M.E., A.J.); Department of Interventional Neuroradiology, Johanna Étienne Hospital, Neuss, Germany (D.M.); Institute of Neuroradiology, Charité Universitätsmedizin Berlin, Berlin, Germany (M. Miszczuk, E.S.); Department of Radiology, Klinikum Osnabrück, Osnabrück, Germany (S.L.); Department of Neurology, Klinikum Osnabrück, Osnabrück, Germany (L.U.K.); Division of Neurology, Department of Medicine, National University Health System, Singapore (L.Y., B.T.); Yong Loo Lin School of Medicine, National University of Singapore, Singapore (L.Y., B.T., A.G.); Division of Interventional Radiology, Department of Diagnostic imaging, National University Health System, Singapore (A.G.); Department of Neuroradiology, University Hospital Bonn, Bonn, Germany (F.D.); Department of Interventional Neuroradiology, Hospital Clínico Universitario de Valladolid, Valladolid, Spain (M.M.G.); Department of Radiology, New York Langone Medical Center, New York, NY (E.R., M.S.); Department of Neuroradiology, Karolinska University Hospital and Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden (F.A., T.A.); Department of Medical Imaging, AZ Groeninge, Kortrijk, Belgium (T.A.); Department of Neurology, Hospital Bremen-Mitte, Bremen, Germany (A. Kastrup); Department of Diagnostic and Interventional Neuroradiology, Hospital Bremen-Mitte, Bremen, Germany (M.A., P.P.); Department of Radiology, Areteion University Hospital, National and Kapodistrian University of Athens, Athens, Greece (P.P.); Department of Neuroradiology, Westpfalz-Klinikum, Kaiserslautern, Germany (W.N.); Department of Neuroradiology, University Hospital Luebeck, Germany (W.N.); Department of Radiology, Comenius University's Jessenius Faculty of Medicine and University Hospital, Martin, Slovakia (K.Z.); Department of Neuroradiology, Hospital Universitario La Paz, Madrid, Spain (P.N.); Department of Neuroradiology, University Hospital Marburg, Marburg, Germany (A. Kemmling); and Stroke Unit, Hospital Clínico Universitario de Valladolid, Valladolid, Spain (J.F.A.L.)., Zimmermann H; From the Department of Diagnostic and Interventional Neuroradiology, University Medical Center Hamburg-Eppendorf, Martinistrasse 52, 20246 Hamburg, Germany (L.M., P.S., G.B., P.S., J.F., U.H.); Department of Interventional Neuroradiology, University Hospital Muenster, Muenster, Germany (P.S., M.E.); Department of Endovascular Therapy, Alfried-Krupp Hospital Essen, Essen, Germany (R.C.); Department of Diagnostic and Interventional Neuroradiology, University Hospital Basel, Basel, Switzerland (P.S., M.P.); Institute of Diagnostic and Interventional Neuroradiology, Inselspital, Bern University Hospital, University of Bern, Switzerland (E.I.P., J.K.); Department of Diagnostic and Interventional Neuroradiology, Klinikum rechts der Isar, School of Medicine, Technical University Munich, Munich, Germany (C.M., M.R.H.P.); Institute of Neuroradiology, University Hospitals, LMU Munich, Munich, Germany (H.Z., F.D.); Department of Neuroradiology, University of Cologne, Cologne, Germany (N.A., C.K.); Department of Neuroradiology, University Hospital Magdeburg, Magdeburg, Germany (E.D., M.T.); Department of Diagnostic Radiology and Interventional Neuroradiology and Nuclear Medicine, Universitätsklinikum Knappschaftskrankenhaus Bochum, Universitätsklinik der Ruhr-Universität Bochum, Bochum Germany (V.M., S.F.); Department of Neuroradiology, Heidelberg University Hospital, Heidelberg, Germany (M. Möhlenbruch, C.S.W.); Department of Diagnostic and Interventional Neuroradiology, University Medical Centre Goettingen, Goettingen, Germany (M.E., A.J.); Department of Interventional Neuroradiology, Johanna Étienne Hospital, Neuss, Germany (D.M.); Institute of Neuroradiology, Charité Universitätsmedizin Berlin, Berlin, Germany (M. Miszczuk, E.S.); Department of Radiology, Klinikum Osnabrück, Osnabrück, Germany (S.L.); Department of Neurology, Klinikum Osnabrück, Osnabrück, Germany (L.U.K.); Division of Neurology, Department of Medicine, National University Health System, Singapore (L.Y., B.T.); Yong Loo Lin School of Medicine, National University of Singapore, Singapore (L.Y., B.T., A.G.); Division of Interventional Radiology, Department of Diagnostic imaging, National University Health System, Singapore (A.G.); Department of Neuroradiology, University Hospital Bonn, Bonn, Germany (F.D.); Department of Interventional Neuroradiology, Hospital Clínico Universitario de Valladolid, Valladolid, Spain (M.M.G.); Department of Radiology, New York Langone Medical Center, New York, NY (E.R., M.S.); Department of Neuroradiology, Karolinska University Hospital and Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden (F.A., T.A.); Department of Medical Imaging, AZ Groeninge, Kortrijk, Belgium (T.A.); Department of Neurology, Hospital Bremen-Mitte, Bremen, Germany (A. Kastrup); Department of Diagnostic and Interventional Neuroradiology, Hospital Bremen-Mitte, Bremen, Germany (M.A., P.P.); Department of Radiology, Areteion University Hospital, National and Kapodistrian University of Athens, Athens, Greece (P.P.); Department of Neuroradiology, Westpfalz-Klinikum, Kaiserslautern, Germany (W.N.); Department of Neuroradiology, University Hospital Luebeck, Germany (W.N.); Department of Radiology, Comenius University's Jessenius Faculty of Medicine and University Hospital, Martin, Slovakia (K.Z.); Department of Neuroradiology, Hospital Universitario La Paz, Madrid, Spain (P.N.); Department of Neuroradiology, University Hospital Marburg, Marburg, Germany (A. Kemmling); and Stroke Unit, Hospital Clínico Universitario de Valladolid, Valladolid, Spain (J.F.A.L.)., Naziri W; From the Department of Diagnostic and Interventional Neuroradiology, University Medical Center Hamburg-Eppendorf, Martinistrasse 52, 20246 Hamburg, Germany (L.M., P.S., G.B., P.S., J.F., U.H.); Department of Interventional Neuroradiology, University Hospital Muenster, Muenster, Germany (P.S., M.E.); Department of Endovascular Therapy, Alfried-Krupp Hospital Essen, Essen, Germany (R.C.); Department of Diagnostic and Interventional Neuroradiology, University Hospital Basel, Basel, Switzerland (P.S., M.P.); Institute of Diagnostic and Interventional Neuroradiology, Inselspital, Bern University Hospital, University of Bern, Switzerland (E.I.P., J.K.); Department of Diagnostic and Interventional Neuroradiology, Klinikum rechts der Isar, School of Medicine, Technical University Munich, Munich, Germany (C.M., M.R.H.P.); Institute of Neuroradiology, University Hospitals, LMU Munich, Munich, Germany (H.Z., F.D.); Department of Neuroradiology, University of Cologne, Cologne, Germany (N.A., C.K.); Department of Neuroradiology, University Hospital Magdeburg, Magdeburg, Germany (E.D., M.T.); Department of Diagnostic Radiology and Interventional Neuroradiology and Nuclear Medicine, Universitätsklinikum Knappschaftskrankenhaus Bochum, Universitätsklinik der Ruhr-Universität Bochum, Bochum Germany (V.M., S.F.); Department of Neuroradiology, Heidelberg University Hospital, Heidelberg, Germany (M. Möhlenbruch, C.S.W.); Department of Diagnostic and Interventional Neuroradiology, University Medical Centre Goettingen, Goettingen, Germany (M.E., A.J.); Department of Interventional Neuroradiology, Johanna Étienne Hospital, Neuss, Germany (D.M.); Institute of Neuroradiology, Charité Universitätsmedizin Berlin, Berlin, Germany (M. Miszczuk, E.S.); Department of Radiology, Klinikum Osnabrück, Osnabrück, Germany (S.L.); Department of Neurology, Klinikum Osnabrück, Osnabrück, Germany (L.U.K.); Division of Neurology, Department of Medicine, National University Health System, Singapore (L.Y., B.T.); Yong Loo Lin School of Medicine, National University of Singapore, Singapore (L.Y., B.T., A.G.); Division of Interventional Radiology, Department of Diagnostic imaging, National University Health System, Singapore (A.G.); Department of Neuroradiology, University Hospital Bonn, Bonn, Germany (F.D.); Department of Interventional Neuroradiology, Hospital Clínico Universitario de Valladolid, Valladolid, Spain (M.M.G.); Department of Radiology, New York Langone Medical Center, New York, NY (E.R., M.S.); Department of Neuroradiology, Karolinska University Hospital and Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden (F.A., T.A.); Department of Medical Imaging, AZ Groeninge, Kortrijk, Belgium (T.A.); Department of Neurology, Hospital Bremen-Mitte, Bremen, Germany (A. Kastrup); Department of Diagnostic and Interventional Neuroradiology, Hospital Bremen-Mitte, Bremen, Germany (M.A., P.P.); Department of Radiology, Areteion University Hospital, National and Kapodistrian University of Athens, Athens, Greece (P.P.); Department of Neuroradiology, Westpfalz-Klinikum, Kaiserslautern, Germany (W.N.); Department of Neuroradiology, University Hospital Luebeck, Germany (W.N.); Department of Radiology, Comenius University's Jessenius Faculty of Medicine and University Hospital, Martin, Slovakia (K.Z.); Department of Neuroradiology, Hospital Universitario La Paz, Madrid, Spain (P.N.); Department of Neuroradiology, University Hospital Marburg, Marburg, Germany (A. Kemmling); and Stroke Unit, Hospital Clínico Universitario de Valladolid, Valladolid, Spain (J.F.A.L.)., Abdullayev N; From the Department of Diagnostic and Interventional Neuroradiology, University Medical Center Hamburg-Eppendorf, Martinistrasse 52, 20246 Hamburg, Germany (L.M., P.S., G.B., P.S., J.F., U.H.); Department of Interventional Neuroradiology, University Hospital Muenster, Muenster, Germany (P.S., M.E.); Department of Endovascular Therapy, Alfried-Krupp Hospital Essen, Essen, Germany (R.C.); Department of Diagnostic and Interventional Neuroradiology, University Hospital Basel, Basel, Switzerland (P.S., M.P.); Institute of Diagnostic and Interventional Neuroradiology, Inselspital, Bern University Hospital, University of Bern, Switzerland (E.I.P., J.K.); Department of Diagnostic and Interventional Neuroradiology, Klinikum rechts der Isar, School of Medicine, Technical University Munich, Munich, Germany (C.M., M.R.H.P.); Institute of Neuroradiology, University Hospitals, LMU Munich, Munich, Germany (H.Z., F.D.); Department of Neuroradiology, University of Cologne, Cologne, Germany (N.A., C.K.); Department of Neuroradiology, University Hospital Magdeburg, Magdeburg, Germany (E.D., M.T.); Department of Diagnostic Radiology and Interventional Neuroradiology and Nuclear Medicine, Universitätsklinikum Knappschaftskrankenhaus Bochum, Universitätsklinik der Ruhr-Universität Bochum, Bochum Germany (V.M., S.F.); Department of Neuroradiology, Heidelberg University Hospital, Heidelberg, Germany (M. Möhlenbruch, C.S.W.); Department of Diagnostic and Interventional Neuroradiology, University Medical Centre Goettingen, Goettingen, Germany (M.E., A.J.); Department of Interventional Neuroradiology, Johanna Étienne Hospital, Neuss, Germany (D.M.); Institute of Neuroradiology, Charité Universitätsmedizin Berlin, Berlin, Germany (M. Miszczuk, E.S.); Department of Radiology, Klinikum Osnabrück, Osnabrück, Germany (S.L.); Department of Neurology, Klinikum Osnabrück, Osnabrück, Germany (L.U.K.); Division of Neurology, Department of Medicine, National University Health System, Singapore (L.Y., B.T.); Yong Loo Lin School of Medicine, National University of Singapore, Singapore (L.Y., B.T., A.G.); Division of Interventional Radiology, Department of Diagnostic imaging, National University Health System, Singapore (A.G.); Department of Neuroradiology, University Hospital Bonn, Bonn, Germany (F.D.); Department of Interventional Neuroradiology, Hospital Clínico Universitario de Valladolid, Valladolid, Spain (M.M.G.); Department of Radiology, New York Langone Medical Center, New York, NY (E.R., M.S.); Department of Neuroradiology, Karolinska University Hospital and Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden (F.A., T.A.); Department of Medical Imaging, AZ Groeninge, Kortrijk, Belgium (T.A.); Department of Neurology, Hospital Bremen-Mitte, Bremen, Germany (A. Kastrup); Department of Diagnostic and Interventional Neuroradiology, Hospital Bremen-Mitte, Bremen, Germany (M.A., P.P.); Department of Radiology, Areteion University Hospital, National and Kapodistrian University of Athens, Athens, Greece (P.P.); Department of Neuroradiology, Westpfalz-Klinikum, Kaiserslautern, Germany (W.N.); Department of Neuroradiology, University Hospital Luebeck, Germany (W.N.); Department of Radiology, Comenius University's Jessenius Faculty of Medicine and University Hospital, Martin, Slovakia (K.Z.); Department of Neuroradiology, Hospital Universitario La Paz, Madrid, Spain (P.N.); Department of Neuroradiology, University Hospital Marburg, Marburg, Germany (A. Kemmling); and Stroke Unit, Hospital Clínico Universitario de Valladolid, Valladolid, Spain (J.F.A.L.)., Kabbasch C; From the Department of Diagnostic and Interventional Neuroradiology, University Medical Center Hamburg-Eppendorf, Martinistrasse 52, 20246 Hamburg, Germany (L.M., P.S., G.B., P.S., J.F., U.H.); Department of Interventional Neuroradiology, University Hospital Muenster, Muenster, Germany (P.S., M.E.); Department of Endovascular Therapy, Alfried-Krupp Hospital Essen, Essen, Germany (R.C.); Department of Diagnostic and Interventional Neuroradiology, University Hospital Basel, Basel, Switzerland (P.S., M.P.); Institute of Diagnostic and Interventional Neuroradiology, Inselspital, Bern University Hospital, University of Bern, Switzerland (E.I.P., J.K.); Department of Diagnostic and Interventional Neuroradiology, Klinikum rechts der Isar, School of Medicine, Technical University Munich, Munich, Germany (C.M., M.R.H.P.); Institute of Neuroradiology, University Hospitals, LMU Munich, Munich, Germany (H.Z., F.D.); Department of Neuroradiology, University of Cologne, Cologne, Germany (N.A., C.K.); Department of Neuroradiology, University Hospital Magdeburg, Magdeburg, Germany (E.D., M.T.); Department of Diagnostic Radiology and Interventional Neuroradiology and Nuclear Medicine, Universitätsklinikum Knappschaftskrankenhaus Bochum, Universitätsklinik der Ruhr-Universität Bochum, Bochum Germany (V.M., S.F.); Department of Neuroradiology, Heidelberg University Hospital, Heidelberg, Germany (M. Möhlenbruch, C.S.W.); Department of Diagnostic and Interventional Neuroradiology, University Medical Centre Goettingen, Goettingen, Germany (M.E., A.J.); Department of Interventional Neuroradiology, Johanna Étienne Hospital, Neuss, Germany (D.M.); Institute of Neuroradiology, Charité Universitätsmedizin Berlin, Berlin, Germany (M. Miszczuk, E.S.); Department of Radiology, Klinikum Osnabrück, Osnabrück, Germany (S.L.); Department of Neurology, Klinikum Osnabrück, Osnabrück, Germany (L.U.K.); Division of Neurology, Department of Medicine, National University Health System, Singapore (L.Y., B.T.); Yong Loo Lin School of Medicine, National University of Singapore, Singapore (L.Y., B.T., A.G.); Division of Interventional Radiology, Department of Diagnostic imaging, National University Health System, Singapore (A.G.); Department of Neuroradiology, University Hospital Bonn, Bonn, Germany (F.D.); Department of Interventional Neuroradiology, Hospital Clínico Universitario de Valladolid, Valladolid, Spain (M.M.G.); Department of Radiology, New York Langone Medical Center, New York, NY (E.R., M.S.); Department of Neuroradiology, Karolinska University Hospital and Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden (F.A., T.A.); Department of Medical Imaging, AZ Groeninge, Kortrijk, Belgium (T.A.); Department of Neurology, Hospital Bremen-Mitte, Bremen, Germany (A. Kastrup); Department of Diagnostic and Interventional Neuroradiology, Hospital Bremen-Mitte, Bremen, Germany (M.A., P.P.); Department of Radiology, Areteion University Hospital, National and Kapodistrian University of Athens, Athens, Greece (P.P.); Department of Neuroradiology, Westpfalz-Klinikum, Kaiserslautern, Germany (W.N.); Department of Neuroradiology, University Hospital Luebeck, Germany (W.N.); Department of Radiology, Comenius University's Jessenius Faculty of Medicine and University Hospital, Martin, Slovakia (K.Z.); Department of Neuroradiology, Hospital Universitario La Paz, Madrid, Spain (P.N.); Department of Neuroradiology, University Hospital Marburg, Marburg, Germany (A. Kemmling); and Stroke Unit, Hospital Clínico Universitario de Valladolid, Valladolid, Spain (J.F.A.L.)., Diamandis E; From the Department of Diagnostic and Interventional Neuroradiology, University Medical Center Hamburg-Eppendorf, Martinistrasse 52, 20246 Hamburg, Germany (L.M., P.S., G.B., P.S., J.F., U.H.); Department of Interventional Neuroradiology, University Hospital Muenster, Muenster, Germany (P.S., M.E.); Department of Endovascular Therapy, Alfried-Krupp Hospital Essen, Essen, Germany (R.C.); Department of Diagnostic and Interventional Neuroradiology, University Hospital Basel, Basel, Switzerland (P.S., M.P.); Institute of Diagnostic and Interventional Neuroradiology, Inselspital, Bern University Hospital, University of Bern, Switzerland (E.I.P., J.K.); Department of Diagnostic and Interventional Neuroradiology, Klinikum rechts der Isar, School of Medicine, Technical University Munich, Munich, Germany (C.M., M.R.H.P.); Institute of Neuroradiology, University Hospitals, LMU Munich, Munich, Germany (H.Z., F.D.); Department of Neuroradiology, University of Cologne, Cologne, Germany (N.A., C.K.); Department of Neuroradiology, University Hospital Magdeburg, Magdeburg, Germany (E.D., M.T.); Department of Diagnostic Radiology and Interventional Neuroradiology and Nuclear Medicine, Universitätsklinikum Knappschaftskrankenhaus Bochum, Universitätsklinik der Ruhr-Universität Bochum, Bochum Germany (V.M., S.F.); Department of Neuroradiology, Heidelberg University Hospital, Heidelberg, Germany (M. Möhlenbruch, C.S.W.); Department of Diagnostic and Interventional Neuroradiology, University Medical Centre Goettingen, Goettingen, Germany (M.E., A.J.); Department of Interventional Neuroradiology, Johanna Étienne Hospital, Neuss, Germany (D.M.); Institute of Neuroradiology, Charité Universitätsmedizin Berlin, Berlin, Germany (M. Miszczuk, E.S.); Department of Radiology, Klinikum Osnabrück, Osnabrück, Germany (S.L.); Department of Neurology, Klinikum Osnabrück, Osnabrück, Germany (L.U.K.); Division of Neurology, Department of Medicine, National University Health System, Singapore (L.Y., B.T.); Yong Loo Lin School of Medicine, National University of Singapore, Singapore (L.Y., B.T., A.G.); Division of Interventional Radiology, Department of Diagnostic imaging, National University Health System, Singapore (A.G.); Department of Neuroradiology, University Hospital Bonn, Bonn, Germany (F.D.); Department of Interventional Neuroradiology, Hospital Clínico Universitario de Valladolid, Valladolid, Spain (M.M.G.); Department of Radiology, New York Langone Medical Center, New York, NY (E.R., M.S.); Department of Neuroradiology, Karolinska University Hospital and Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden (F.A., T.A.); Department of Medical Imaging, AZ Groeninge, Kortrijk, Belgium (T.A.); Department of Neurology, Hospital Bremen-Mitte, Bremen, Germany (A. Kastrup); Department of Diagnostic and Interventional Neuroradiology, Hospital Bremen-Mitte, Bremen, Germany (M.A., P.P.); Department of Radiology, Areteion University Hospital, National and Kapodistrian University of Athens, Athens, Greece (P.P.); Department of Neuroradiology, Westpfalz-Klinikum, Kaiserslautern, Germany (W.N.); Department of Neuroradiology, University Hospital Luebeck, Germany (W.N.); Department of Radiology, Comenius University's Jessenius Faculty of Medicine and University Hospital, Martin, Slovakia (K.Z.); Department of Neuroradiology, Hospital Universitario La Paz, Madrid, Spain (P.N.); Department of Neuroradiology, University Hospital Marburg, Marburg, Germany (A. Kemmling); and Stroke Unit, Hospital Clínico Universitario de Valladolid, Valladolid, Spain (J.F.A.L.)., Thormann M; From the Department of Diagnostic and Interventional Neuroradiology, University Medical Center Hamburg-Eppendorf, Martinistrasse 52, 20246 Hamburg, Germany (L.M., P.S., G.B., P.S., J.F., U.H.); Department of Interventional Neuroradiology, University Hospital Muenster, Muenster, Germany (P.S., M.E.); Department of Endovascular Therapy, Alfried-Krupp Hospital Essen, Essen, Germany (R.C.); Department of Diagnostic and Interventional Neuroradiology, University Hospital Basel, Basel, Switzerland (P.S., M.P.); Institute of Diagnostic and Interventional Neuroradiology, Inselspital, Bern University Hospital, University of Bern, Switzerland (E.I.P., J.K.); Department of Diagnostic and Interventional Neuroradiology, Klinikum rechts der Isar, School of Medicine, Technical University Munich, Munich, Germany (C.M., M.R.H.P.); Institute of Neuroradiology, University Hospitals, LMU Munich, Munich, Germany (H.Z., F.D.); Department of Neuroradiology, University of Cologne, Cologne, Germany (N.A., C.K.); Department of Neuroradiology, University Hospital Magdeburg, Magdeburg, Germany (E.D., M.T.); Department of Diagnostic Radiology and Interventional Neuroradiology and Nuclear Medicine, Universitätsklinikum Knappschaftskrankenhaus Bochum, Universitätsklinik der Ruhr-Universität Bochum, Bochum Germany (V.M., S.F.); Department of Neuroradiology, Heidelberg University Hospital, Heidelberg, Germany (M. Möhlenbruch, C.S.W.); Department of Diagnostic and Interventional Neuroradiology, University Medical Centre Goettingen, Goettingen, Germany (M.E., A.J.); Department of Interventional Neuroradiology, Johanna Étienne Hospital, Neuss, Germany (D.M.); Institute of Neuroradiology, Charité Universitätsmedizin Berlin, Berlin, Germany (M. Miszczuk, E.S.); Department of Radiology, Klinikum Osnabrück, Osnabrück, Germany (S.L.); Department of Neurology, Klinikum Osnabrück, Osnabrück, Germany (L.U.K.); Division of Neurology, Department of Medicine, National University Health System, Singapore (L.Y., B.T.); Yong Loo Lin School of Medicine, National University of Singapore, Singapore (L.Y., B.T., A.G.); Division of Interventional Radiology, Department of Diagnostic imaging, National University Health System, Singapore (A.G.); Department of Neuroradiology, University Hospital Bonn, Bonn, Germany (F.D.); Department of Interventional Neuroradiology, Hospital Clínico Universitario de Valladolid, Valladolid, Spain (M.M.G.); Department of Radiology, New York Langone Medical Center, New York, NY (E.R., M.S.); Department of Neuroradiology, Karolinska University Hospital and Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden (F.A., T.A.); Department of Medical Imaging, AZ Groeninge, Kortrijk, Belgium (T.A.); Department of Neurology, Hospital Bremen-Mitte, Bremen, Germany (A. Kastrup); Department of Diagnostic and Interventional Neuroradiology, Hospital Bremen-Mitte, Bremen, Germany (M.A., P.P.); Department of Radiology, Areteion University Hospital, National and Kapodistrian University of Athens, Athens, Greece (P.P.); Department of Neuroradiology, Westpfalz-Klinikum, Kaiserslautern, Germany (W.N.); Department of Neuroradiology, University Hospital Luebeck, Germany (W.N.); Department of Radiology, Comenius University's Jessenius Faculty of Medicine and University Hospital, Martin, Slovakia (K.Z.); Department of Neuroradiology, Hospital Universitario La Paz, Madrid, Spain (P.N.); Department of Neuroradiology, University Hospital Marburg, Marburg, Germany (A. Kemmling); and Stroke Unit, Hospital Clínico Universitario de Valladolid, Valladolid, Spain (J.F.A.L.)., Maus V; From the Department of Diagnostic and Interventional Neuroradiology, University Medical Center Hamburg-Eppendorf, Martinistrasse 52, 20246 Hamburg, Germany (L.M., P.S., G.B., P.S., J.F., U.H.); Department of Interventional Neuroradiology, University Hospital Muenster, Muenster, Germany (P.S., M.E.); Department of Endovascular Therapy, Alfried-Krupp Hospital Essen, Essen, Germany (R.C.); Department of Diagnostic and Interventional Neuroradiology, University Hospital Basel, Basel, Switzerland (P.S., M.P.); Institute of Diagnostic and Interventional Neuroradiology, Inselspital, Bern University Hospital, University of Bern, Switzerland (E.I.P., J.K.); Department of Diagnostic and Interventional Neuroradiology, Klinikum rechts der Isar, School of Medicine, Technical University Munich, Munich, Germany (C.M., M.R.H.P.); Institute of Neuroradiology, University Hospitals, LMU Munich, Munich, Germany (H.Z., F.D.); Department of Neuroradiology, University of Cologne, Cologne, Germany (N.A., C.K.); Department of Neuroradiology, University Hospital Magdeburg, Magdeburg, Germany (E.D., M.T.); Department of Diagnostic Radiology and Interventional Neuroradiology and Nuclear Medicine, Universitätsklinikum Knappschaftskrankenhaus Bochum, Universitätsklinik der Ruhr-Universität Bochum, Bochum Germany (V.M., S.F.); Department of Neuroradiology, Heidelberg University Hospital, Heidelberg, Germany (M. Möhlenbruch, C.S.W.); Department of Diagnostic and Interventional Neuroradiology, University Medical Centre Goettingen, Goettingen, Germany (M.E., A.J.); Department of Interventional Neuroradiology, Johanna Étienne Hospital, Neuss, Germany (D.M.); Institute of Neuroradiology, Charité Universitätsmedizin Berlin, Berlin, Germany (M. Miszczuk, E.S.); Department of Radiology, Klinikum Osnabrück, Osnabrück, Germany (S.L.); Department of Neurology, Klinikum Osnabrück, Osnabrück, Germany (L.U.K.); Division of Neurology, Department of Medicine, National University Health System, Singapore (L.Y., B.T.); Yong Loo Lin School of Medicine, National University of Singapore, Singapore (L.Y., B.T., A.G.); Division of Interventional Radiology, Department of Diagnostic imaging, National University Health System, Singapore (A.G.); Department of Neuroradiology, University Hospital Bonn, Bonn, Germany (F.D.); Department of Interventional Neuroradiology, Hospital Clínico Universitario de Valladolid, Valladolid, Spain (M.M.G.); Department of Radiology, New York Langone Medical Center, New York, NY (E.R., M.S.); Department of Neuroradiology, Karolinska University Hospital and Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden (F.A., T.A.); Department of Medical Imaging, AZ Groeninge, Kortrijk, Belgium (T.A.); Department of Neurology, Hospital Bremen-Mitte, Bremen, Germany (A. Kastrup); Department of Diagnostic and Interventional Neuroradiology, Hospital Bremen-Mitte, Bremen, Germany (M.A., P.P.); Department of Radiology, Areteion University Hospital, National and Kapodistrian University of Athens, Athens, Greece (P.P.); Department of Neuroradiology, Westpfalz-Klinikum, Kaiserslautern, Germany (W.N.); Department of Neuroradiology, University Hospital Luebeck, Germany (W.N.); Department of Radiology, Comenius University's Jessenius Faculty of Medicine and University Hospital, Martin, Slovakia (K.Z.); Department of Neuroradiology, Hospital Universitario La Paz, Madrid, Spain (P.N.); Department of Neuroradiology, University Hospital Marburg, Marburg, Germany (A. Kemmling); and Stroke Unit, Hospital Clínico Universitario de Valladolid, Valladolid, Spain (J.F.A.L.)., Fischer S; From the Department of Diagnostic and Interventional Neuroradiology, University Medical Center Hamburg-Eppendorf, Martinistrasse 52, 20246 Hamburg, Germany (L.M., P.S., G.B., P.S., J.F., U.H.); Department of Interventional Neuroradiology, University Hospital Muenster, Muenster, Germany (P.S., M.E.); Department of Endovascular Therapy, Alfried-Krupp Hospital Essen, Essen, Germany (R.C.); Department of Diagnostic and Interventional Neuroradiology, University Hospital Basel, Basel, Switzerland (P.S., M.P.); Institute of Diagnostic and Interventional Neuroradiology, Inselspital, Bern University Hospital, University of Bern, Switzerland (E.I.P., J.K.); Department of Diagnostic and Interventional Neuroradiology, Klinikum rechts der Isar, School of Medicine, Technical University Munich, Munich, Germany (C.M., M.R.H.P.); Institute of Neuroradiology, University Hospitals, LMU Munich, Munich, Germany (H.Z., F.D.); Department of Neuroradiology, University of Cologne, Cologne, Germany (N.A., C.K.); Department of Neuroradiology, University Hospital Magdeburg, Magdeburg, Germany (E.D., M.T.); Department of Diagnostic Radiology and Interventional Neuroradiology and Nuclear Medicine, Universitätsklinikum Knappschaftskrankenhaus Bochum, Universitätsklinik der Ruhr-Universität Bochum, Bochum Germany (V.M., S.F.); Department of Neuroradiology, Heidelberg University Hospital, Heidelberg, Germany (M. Möhlenbruch, C.S.W.); Department of Diagnostic and Interventional Neuroradiology, University Medical Centre Goettingen, Goettingen, Germany (M.E., A.J.); Department of Interventional Neuroradiology, Johanna Étienne Hospital, Neuss, Germany (D.M.); Institute of Neuroradiology, Charité Universitätsmedizin Berlin, Berlin, Germany (M. Miszczuk, E.S.); Department of Radiology, Klinikum Osnabrück, Osnabrück, Germany (S.L.); Department of Neurology, Klinikum Osnabrück, Osnabrück, Germany (L.U.K.); Division of Neurology, Department of Medicine, National University Health System, Singapore (L.Y., B.T.); Yong Loo Lin School of Medicine, National University of Singapore, Singapore (L.Y., B.T., A.G.); Division of Interventional Radiology, Department of Diagnostic imaging, National University Health System, Singapore (A.G.); Department of Neuroradiology, University Hospital Bonn, Bonn, Germany (F.D.); Department of Interventional Neuroradiology, Hospital Clínico Universitario de Valladolid, Valladolid, Spain (M.M.G.); Department of Radiology, New York Langone Medical Center, New York, NY (E.R., M.S.); Department of Neuroradiology, Karolinska University Hospital and Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden (F.A., T.A.); Department of Medical Imaging, AZ Groeninge, Kortrijk, Belgium (T.A.); Department of Neurology, Hospital Bremen-Mitte, Bremen, Germany (A. Kastrup); Department of Diagnostic and Interventional Neuroradiology, Hospital Bremen-Mitte, Bremen, Germany (M.A., P.P.); Department of Radiology, Areteion University Hospital, National and Kapodistrian University of Athens, Athens, Greece (P.P.); Department of Neuroradiology, Westpfalz-Klinikum, Kaiserslautern, Germany (W.N.); Department of Neuroradiology, University Hospital Luebeck, Germany (W.N.); Department of Radiology, Comenius University's Jessenius Faculty of Medicine and University Hospital, Martin, Slovakia (K.Z.); Department of Neuroradiology, Hospital Universitario La Paz, Madrid, Spain (P.N.); Department of Neuroradiology, University Hospital Marburg, Marburg, Germany (A. Kemmling); and Stroke Unit, Hospital Clínico Universitario de Valladolid, Valladolid, Spain (J.F.A.L.)., Möhlenbruch M; From the Department of Diagnostic and Interventional Neuroradiology, University Medical Center Hamburg-Eppendorf, Martinistrasse 52, 20246 Hamburg, Germany (L.M., P.S., G.B., P.S., J.F., U.H.); Department of Interventional Neuroradiology, University Hospital Muenster, Muenster, Germany (P.S., M.E.); Department of Endovascular Therapy, Alfried-Krupp Hospital Essen, Essen, Germany (R.C.); Department of Diagnostic and Interventional Neuroradiology, University Hospital Basel, Basel, Switzerland (P.S., M.P.); Institute of Diagnostic and Interventional Neuroradiology, Inselspital, Bern University Hospital, University of Bern, Switzerland (E.I.P., J.K.); Department of Diagnostic and Interventional Neuroradiology, Klinikum rechts der Isar, School of Medicine, Technical University Munich, Munich, Germany (C.M., M.R.H.P.); Institute of Neuroradiology, University Hospitals, LMU Munich, Munich, Germany (H.Z., F.D.); Department of Neuroradiology, University of Cologne, Cologne, Germany (N.A., C.K.); Department of Neuroradiology, University Hospital Magdeburg, Magdeburg, Germany (E.D., M.T.); Department of Diagnostic Radiology and Interventional Neuroradiology and Nuclear Medicine, Universitätsklinikum Knappschaftskrankenhaus Bochum, Universitätsklinik der Ruhr-Universität Bochum, Bochum Germany (V.M., S.F.); Department of Neuroradiology, Heidelberg University Hospital, Heidelberg, Germany (M. Möhlenbruch, C.S.W.); Department of Diagnostic and Interventional Neuroradiology, University Medical Centre Goettingen, Goettingen, Germany (M.E., A.J.); Department of Interventional Neuroradiology, Johanna Étienne Hospital, Neuss, Germany (D.M.); Institute of Neuroradiology, Charité Universitätsmedizin Berlin, Berlin, Germany (M. Miszczuk, E.S.); Department of Radiology, Klinikum Osnabrück, Osnabrück, Germany (S.L.); Department of Neurology, Klinikum Osnabrück, Osnabrück, Germany (L.U.K.); Division of Neurology, Department of Medicine, National University Health System, Singapore (L.Y., B.T.); Yong Loo Lin School of Medicine, National University of Singapore, Singapore (L.Y., B.T., A.G.); Division of Interventional Radiology, Department of Diagnostic imaging, National University Health System, Singapore (A.G.); Department of Neuroradiology, University Hospital Bonn, Bonn, Germany (F.D.); Department of Interventional Neuroradiology, Hospital Clínico Universitario de Valladolid, Valladolid, Spain (M.M.G.); Department of Radiology, New York Langone Medical Center, New York, NY (E.R., M.S.); Department of Neuroradiology, Karolinska University Hospital and Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden (F.A., T.A.); Department of Medical Imaging, AZ Groeninge, Kortrijk, Belgium (T.A.); Department of Neurology, Hospital Bremen-Mitte, Bremen, Germany (A. Kastrup); Department of Diagnostic and Interventional Neuroradiology, Hospital Bremen-Mitte, Bremen, Germany (M.A., P.P.); Department of Radiology, Areteion University Hospital, National and Kapodistrian University of Athens, Athens, Greece (P.P.); Department of Neuroradiology, Westpfalz-Klinikum, Kaiserslautern, Germany (W.N.); Department of Neuroradiology, University Hospital Luebeck, Germany (W.N.); Department of Radiology, Comenius University's Jessenius Faculty of Medicine and University Hospital, Martin, Slovakia (K.Z.); Department of Neuroradiology, Hospital Universitario La Paz, Madrid, Spain (P.N.); Department of Neuroradiology, University Hospital Marburg, Marburg, Germany (A. Kemmling); and Stroke Unit, Hospital Clínico Universitario de Valladolid, Valladolid, Spain (J.F.A.L.)., Weyland CS; From the Department of Diagnostic and Interventional Neuroradiology, University Medical Center Hamburg-Eppendorf, Martinistrasse 52, 20246 Hamburg, Germany (L.M., P.S., G.B., P.S., J.F., U.H.); Department of Interventional Neuroradiology, University Hospital Muenster, Muenster, Germany (P.S., M.E.); Department of Endovascular Therapy, Alfried-Krupp Hospital Essen, Essen, Germany (R.C.); Department of Diagnostic and Interventional Neuroradiology, University Hospital Basel, Basel, Switzerland (P.S., M.P.); Institute of Diagnostic and Interventional Neuroradiology, Inselspital, Bern University Hospital, University of Bern, Switzerland (E.I.P., J.K.); Department of Diagnostic and Interventional Neuroradiology, Klinikum rechts der Isar, School of Medicine, Technical University Munich, Munich, Germany (C.M., M.R.H.P.); Institute of Neuroradiology, University Hospitals, LMU Munich, Munich, Germany (H.Z., F.D.); Department of Neuroradiology, University of Cologne, Cologne, Germany (N.A., C.K.); Department of Neuroradiology, University Hospital Magdeburg, Magdeburg, Germany (E.D., M.T.); Department of Diagnostic Radiology and Interventional Neuroradiology and Nuclear Medicine, Universitätsklinikum Knappschaftskrankenhaus Bochum, Universitätsklinik der Ruhr-Universität Bochum, Bochum Germany (V.M., S.F.); Department of Neuroradiology, Heidelberg University Hospital, Heidelberg, Germany (M. Möhlenbruch, C.S.W.); Department of Diagnostic and Interventional Neuroradiology, University Medical Centre Goettingen, Goettingen, Germany (M.E., A.J.); Department of Interventional Neuroradiology, Johanna Étienne Hospital, Neuss, Germany (D.M.); Institute of Neuroradiology, Charité Universitätsmedizin Berlin, Berlin, Germany (M. Miszczuk, E.S.); Department of Radiology, Klinikum Osnabrück, Osnabrück, Germany (S.L.); Department of Neurology, Klinikum Osnabrück, Osnabrück, Germany (L.U.K.); Division of Neurology, Department of Medicine, National University Health System, Singapore (L.Y., B.T.); Yong Loo Lin School of Medicine, National University of Singapore, Singapore (L.Y., B.T., A.G.); Division of Interventional Radiology, Department of Diagnostic imaging, National University Health System, Singapore (A.G.); Department of Neuroradiology, University Hospital Bonn, Bonn, Germany (F.D.); Department of Interventional Neuroradiology, Hospital Clínico Universitario de Valladolid, Valladolid, Spain (M.M.G.); Department of Radiology, New York Langone Medical Center, New York, NY (E.R., M.S.); Department of Neuroradiology, Karolinska University Hospital and Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden (F.A., T.A.); Department of Medical Imaging, AZ Groeninge, Kortrijk, Belgium (T.A.); Department of Neurology, Hospital Bremen-Mitte, Bremen, Germany (A. Kastrup); Department of Diagnostic and Interventional Neuroradiology, Hospital Bremen-Mitte, Bremen, Germany (M.A., P.P.); Department of Radiology, Areteion University Hospital, National and Kapodistrian University of Athens, Athens, Greece (P.P.); Department of Neuroradiology, Westpfalz-Klinikum, Kaiserslautern, Germany (W.N.); Department of Neuroradiology, University Hospital Luebeck, Germany (W.N.); Department of Radiology, Comenius University's Jessenius Faculty of Medicine and University Hospital, Martin, Slovakia (K.Z.); Department of Neuroradiology, Hospital Universitario La Paz, Madrid, Spain (P.N.); Department of Neuroradiology, University Hospital Marburg, Marburg, Germany (A. Kemmling); and Stroke Unit, Hospital Clínico Universitario de Valladolid, Valladolid, Spain (J.F.A.L.)., Ernst M; From the Department of Diagnostic and Interventional Neuroradiology, University Medical Center Hamburg-Eppendorf, Martinistrasse 52, 20246 Hamburg, Germany (L.M., P.S., G.B., P.S., J.F., U.H.); Department of Interventional Neuroradiology, University Hospital Muenster, Muenster, Germany (P.S., M.E.); Department of Endovascular Therapy, Alfried-Krupp Hospital Essen, Essen, Germany (R.C.); Department of Diagnostic and Interventional Neuroradiology, University Hospital Basel, Basel, Switzerland (P.S., M.P.); Institute of Diagnostic and Interventional Neuroradiology, Inselspital, Bern University Hospital, University of Bern, Switzerland (E.I.P., J.K.); Department of Diagnostic and Interventional Neuroradiology, Klinikum rechts der Isar, School of Medicine, Technical University Munich, Munich, Germany (C.M., M.R.H.P.); Institute of Neuroradiology, University Hospitals, LMU Munich, Munich, Germany (H.Z., F.D.); Department of Neuroradiology, University of Cologne, Cologne, Germany (N.A., C.K.); Department of Neuroradiology, University Hospital Magdeburg, Magdeburg, Germany (E.D., M.T.); Department of Diagnostic Radiology and Interventional Neuroradiology and Nuclear Medicine, Universitätsklinikum Knappschaftskrankenhaus Bochum, Universitätsklinik der Ruhr-Universität Bochum, Bochum Germany (V.M., S.F.); Department of Neuroradiology, Heidelberg University Hospital, Heidelberg, Germany (M. Möhlenbruch, C.S.W.); Department of Diagnostic and Interventional Neuroradiology, University Medical Centre Goettingen, Goettingen, Germany (M.E., A.J.); Department of Interventional Neuroradiology, Johanna Étienne Hospital, Neuss, Germany (D.M.); Institute of Neuroradiology, Charité Universitätsmedizin Berlin, Berlin, Germany (M. Miszczuk, E.S.); Department of Radiology, Klinikum Osnabrück, Osnabrück, Germany (S.L.); Department of Neurology, Klinikum Osnabrück, Osnabrück, Germany (L.U.K.); Division of Neurology, Department of Medicine, National University Health System, Singapore (L.Y., B.T.); Yong Loo Lin School of Medicine, National University of Singapore, Singapore (L.Y., B.T., A.G.); Division of Interventional Radiology, Department of Diagnostic imaging, National University Health System, Singapore (A.G.); Department of Neuroradiology, University Hospital Bonn, Bonn, Germany (F.D.); Department of Interventional Neuroradiology, Hospital Clínico Universitario de Valladolid, Valladolid, Spain (M.M.G.); Department of Radiology, New York Langone Medical Center, New York, NY (E.R., M.S.); Department of Neuroradiology, Karolinska University Hospital and Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden (F.A., T.A.); Department of Medical Imaging, AZ Groeninge, Kortrijk, Belgium (T.A.); Department of Neurology, Hospital Bremen-Mitte, Bremen, Germany (A. Kastrup); Department of Diagnostic and Interventional Neuroradiology, Hospital Bremen-Mitte, Bremen, Germany (M.A., P.P.); Department of Radiology, Areteion University Hospital, National and Kapodistrian University of Athens, Athens, Greece (P.P.); Department of Neuroradiology, Westpfalz-Klinikum, Kaiserslautern, Germany (W.N.); Department of Neuroradiology, University Hospital Luebeck, Germany (W.N.); Department of Radiology, Comenius University's Jessenius Faculty of Medicine and University Hospital, Martin, Slovakia (K.Z.); Department of Neuroradiology, Hospital Universitario La Paz, Madrid, Spain (P.N.); Department of Neuroradiology, University Hospital Marburg, Marburg, Germany (A. Kemmling); and Stroke Unit, Hospital Clínico Universitario de Valladolid, Valladolid, Spain (J.F.A.L.)., Jamous A; From the Department of Diagnostic and Interventional Neuroradiology, University Medical Center Hamburg-Eppendorf, Martinistrasse 52, 20246 Hamburg, Germany (L.M., P.S., G.B., P.S., J.F., U.H.); Department of Interventional Neuroradiology, University Hospital Muenster, Muenster, Germany (P.S., M.E.); Department of Endovascular Therapy, Alfried-Krupp Hospital Essen, Essen, Germany (R.C.); Department of Diagnostic and Interventional Neuroradiology, University Hospital Basel, Basel, Switzerland (P.S., M.P.); Institute of Diagnostic and Interventional Neuroradiology, Inselspital, Bern University Hospital, University of Bern, Switzerland (E.I.P., J.K.); Department of Diagnostic and Interventional Neuroradiology, Klinikum rechts der Isar, School of Medicine, Technical University Munich, Munich, Germany (C.M., M.R.H.P.); Institute of Neuroradiology, University Hospitals, LMU Munich, Munich, Germany (H.Z., F.D.); Department of Neuroradiology, University of Cologne, Cologne, Germany (N.A., C.K.); Department of Neuroradiology, University Hospital Magdeburg, Magdeburg, Germany (E.D., M.T.); Department of Diagnostic Radiology and Interventional Neuroradiology and Nuclear Medicine, Universitätsklinikum Knappschaftskrankenhaus Bochum, Universitätsklinik der Ruhr-Universität Bochum, Bochum Germany (V.M., S.F.); Department of Neuroradiology, Heidelberg University Hospital, Heidelberg, Germany (M. Möhlenbruch, C.S.W.); Department of Diagnostic and Interventional Neuroradiology, University Medical Centre Goettingen, Goettingen, Germany (M.E., A.J.); Department of Interventional Neuroradiology, Johanna Étienne Hospital, Neuss, Germany (D.M.); Institute of Neuroradiology, Charité Universitätsmedizin Berlin, Berlin, Germany (M. Miszczuk, E.S.); Department of Radiology, Klinikum Osnabrück, Osnabrück, Germany (S.L.); Department of Neurology, Klinikum Osnabrück, Osnabrück, Germany (L.U.K.); Division of Neurology, Department of Medicine, National University Health System, Singapore (L.Y., B.T.); Yong Loo Lin School of Medicine, National University of Singapore, Singapore (L.Y., B.T., A.G.); Division of Interventional Radiology, Department of Diagnostic imaging, National University Health System, Singapore (A.G.); Department of Neuroradiology, University Hospital Bonn, Bonn, Germany (F.D.); Department of Interventional Neuroradiology, Hospital Clínico Universitario de Valladolid, Valladolid, Spain (M.M.G.); Department of Radiology, New York Langone Medical Center, New York, NY (E.R., M.S.); Department of Neuroradiology, Karolinska University Hospital and Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden (F.A., T.A.); Department of Medical Imaging, AZ Groeninge, Kortrijk, Belgium (T.A.); Department of Neurology, Hospital Bremen-Mitte, Bremen, Germany (A. Kastrup); Department of Diagnostic and Interventional Neuroradiology, Hospital Bremen-Mitte, Bremen, Germany (M.A., P.P.); Department of Radiology, Areteion University Hospital, National and Kapodistrian University of Athens, Athens, Greece (P.P.); Department of Neuroradiology, Westpfalz-Klinikum, Kaiserslautern, Germany (W.N.); Department of Neuroradiology, University Hospital Luebeck, Germany (W.N.); Department of Radiology, Comenius University's Jessenius Faculty of Medicine and University Hospital, Martin, Slovakia (K.Z.); Department of Neuroradiology, Hospital Universitario La Paz, Madrid, Spain (P.N.); Department of Neuroradiology, University Hospital Marburg, Marburg, Germany (A. Kemmling); and Stroke Unit, Hospital Clínico Universitario de Valladolid, Valladolid, Spain (J.F.A.L.)., Meila D; From the Department of Diagnostic and Interventional Neuroradiology, University Medical Center Hamburg-Eppendorf, Martinistrasse 52, 20246 Hamburg, Germany (L.M., P.S., G.B., P.S., J.F., U.H.); Department of Interventional Neuroradiology, University Hospital Muenster, Muenster, Germany (P.S., M.E.); Department of Endovascular Therapy, Alfried-Krupp Hospital Essen, Essen, Germany (R.C.); Department of Diagnostic and Interventional Neuroradiology, University Hospital Basel, Basel, Switzerland (P.S., M.P.); Institute of Diagnostic and Interventional Neuroradiology, Inselspital, Bern University Hospital, University of Bern, Switzerland (E.I.P., J.K.); Department of Diagnostic and Interventional Neuroradiology, Klinikum rechts der Isar, School of Medicine, Technical University Munich, Munich, Germany (C.M., M.R.H.P.); Institute of Neuroradiology, University Hospitals, LMU Munich, Munich, Germany (H.Z., F.D.); Department of Neuroradiology, University of Cologne, Cologne, Germany (N.A., C.K.); Department of Neuroradiology, University Hospital Magdeburg, Magdeburg, Germany (E.D., M.T.); Department of Diagnostic Radiology and Interventional Neuroradiology and Nuclear Medicine, Universitätsklinikum Knappschaftskrankenhaus Bochum, Universitätsklinik der Ruhr-Universität Bochum, Bochum Germany (V.M., S.F.); Department of Neuroradiology, Heidelberg University Hospital, Heidelberg, Germany (M. Möhlenbruch, C.S.W.); Department of Diagnostic and Interventional Neuroradiology, University Medical Centre Goettingen, Goettingen, Germany (M.E., A.J.); Department of Interventional Neuroradiology, Johanna Étienne Hospital, Neuss, Germany (D.M.); Institute of Neuroradiology, Charité Universitätsmedizin Berlin, Berlin, Germany (M. Miszczuk, E.S.); Department of Radiology, Klinikum Osnabrück, Osnabrück, Germany (S.L.); Department of Neurology, Klinikum Osnabrück, Osnabrück, Germany (L.U.K.); Division of Neurology, Department of Medicine, National University Health System, Singapore (L.Y., B.T.); Yong Loo Lin School of Medicine, National University of Singapore, Singapore (L.Y., B.T., A.G.); Division of Interventional Radiology, Department of Diagnostic imaging, National University Health System, Singapore (A.G.); Department of Neuroradiology, University Hospital Bonn, Bonn, Germany (F.D.); Department of Interventional Neuroradiology, Hospital Clínico Universitario de Valladolid, Valladolid, Spain (M.M.G.); Department of Radiology, New York Langone Medical Center, New York, NY (E.R., M.S.); Department of Neuroradiology, Karolinska University Hospital and Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden (F.A., T.A.); Department of Medical Imaging, AZ Groeninge, Kortrijk, Belgium (T.A.); Department of Neurology, Hospital Bremen-Mitte, Bremen, Germany (A. Kastrup); Department of Diagnostic and Interventional Neuroradiology, Hospital Bremen-Mitte, Bremen, Germany (M.A., P.P.); Department of Radiology, Areteion University Hospital, National and Kapodistrian University of Athens, Athens, Greece (P.P.); Department of Neuroradiology, Westpfalz-Klinikum, Kaiserslautern, Germany (W.N.); Department of Neuroradiology, University Hospital Luebeck, Germany (W.N.); Department of Radiology, Comenius University's Jessenius Faculty of Medicine and University Hospital, Martin, Slovakia (K.Z.); Department of Neuroradiology, Hospital Universitario La Paz, Madrid, Spain (P.N.); Department of Neuroradiology, University Hospital Marburg, Marburg, Germany (A. Kemmling); and Stroke Unit, Hospital Clínico Universitario de Valladolid, Valladolid, Spain (J.F.A.L.)., Miszczuk M; From the Department of Diagnostic and Interventional Neuroradiology, University Medical Center Hamburg-Eppendorf, Martinistrasse 52, 20246 Hamburg, Germany (L.M., P.S., G.B., P.S., J.F., U.H.); Department of Interventional Neuroradiology, University Hospital Muenster, Muenster, Germany (P.S., M.E.); Department of Endovascular Therapy, Alfried-Krupp Hospital Essen, Essen, Germany (R.C.); Department of Diagnostic and Interventional Neuroradiology, University Hospital Basel, Basel, Switzerland (P.S., M.P.); Institute of Diagnostic and Interventional Neuroradiology, Inselspital, Bern University Hospital, University of Bern, Switzerland (E.I.P., J.K.); Department of Diagnostic and Interventional Neuroradiology, Klinikum rechts der Isar, School of Medicine, Technical University Munich, Munich, Germany (C.M., M.R.H.P.); Institute of Neuroradiology, University Hospitals, LMU Munich, Munich, Germany (H.Z., F.D.); Department of Neuroradiology, University of Cologne, Cologne, Germany (N.A., C.K.); Department of Neuroradiology, University Hospital Magdeburg, Magdeburg, Germany (E.D., M.T.); Department of Diagnostic Radiology and Interventional Neuroradiology and Nuclear Medicine, Universitätsklinikum Knappschaftskrankenhaus Bochum, Universitätsklinik der Ruhr-Universität Bochum, Bochum Germany (V.M., S.F.); Department of Neuroradiology, Heidelberg University Hospital, Heidelberg, Germany (M. Möhlenbruch, C.S.W.); Department of Diagnostic and Interventional Neuroradiology, University Medical Centre Goettingen, Goettingen, Germany (M.E., A.J.); Department of Interventional Neuroradiology, Johanna Étienne Hospital, Neuss, Germany (D.M.); Institute of Neuroradiology, Charité Universitätsmedizin Berlin, Berlin, Germany (M. Miszczuk, E.S.); Department of Radiology, Klinikum Osnabrück, Osnabrück, Germany (S.L.); Department of Neurology, Klinikum Osnabrück, Osnabrück, Germany (L.U.K.); Division of Neurology, Department of Medicine, National University Health System, Singapore (L.Y., B.T.); Yong Loo Lin School of Medicine, National University of Singapore, Singapore (L.Y., B.T., A.G.); Division of Interventional Radiology, Department of Diagnostic imaging, National University Health System, Singapore (A.G.); Department of Neuroradiology, University Hospital Bonn, Bonn, Germany (F.D.); Department of Interventional Neuroradiology, Hospital Clínico Universitario de Valladolid, Valladolid, Spain (M.M.G.); Department of Radiology, New York Langone Medical Center, New York, NY (E.R., M.S.); Department of Neuroradiology, Karolinska University Hospital and Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden (F.A., T.A.); Department of Medical Imaging, AZ Groeninge, Kortrijk, Belgium (T.A.); Department of Neurology, Hospital Bremen-Mitte, Bremen, Germany (A. Kastrup); Department of Diagnostic and Interventional Neuroradiology, Hospital Bremen-Mitte, Bremen, Germany (M.A., P.P.); Department of Radiology, Areteion University Hospital, National and Kapodistrian University of Athens, Athens, Greece (P.P.); Department of Neuroradiology, Westpfalz-Klinikum, Kaiserslautern, Germany (W.N.); Department of Neuroradiology, University Hospital Luebeck, Germany (W.N.); Department of Radiology, Comenius University's Jessenius Faculty of Medicine and University Hospital, Martin, Slovakia (K.Z.); Department of Neuroradiology, Hospital Universitario La Paz, Madrid, Spain (P.N.); Department of Neuroradiology, University Hospital Marburg, Marburg, Germany (A. Kemmling); and Stroke Unit, Hospital Clínico Universitario de Valladolid, Valladolid, Spain (J.F.A.L.)., Siebert E; From the Department of Diagnostic and Interventional Neuroradiology, University Medical Center Hamburg-Eppendorf, Martinistrasse 52, 20246 Hamburg, Germany (L.M., P.S., G.B., P.S., J.F., U.H.); Department of Interventional Neuroradiology, University Hospital Muenster, Muenster, Germany (P.S., M.E.); Department of Endovascular Therapy, Alfried-Krupp Hospital Essen, Essen, Germany (R.C.); Department of Diagnostic and Interventional Neuroradiology, University Hospital Basel, Basel, Switzerland (P.S., M.P.); Institute of Diagnostic and Interventional Neuroradiology, Inselspital, Bern University Hospital, University of Bern, Switzerland (E.I.P., J.K.); Department of Diagnostic and Interventional Neuroradiology, Klinikum rechts der Isar, School of Medicine, Technical University Munich, Munich, Germany (C.M., M.R.H.P.); Institute of Neuroradiology, University Hospitals, LMU Munich, Munich, Germany (H.Z., F.D.); Department of Neuroradiology, University of Cologne, Cologne, Germany (N.A., C.K.); Department of Neuroradiology, University Hospital Magdeburg, Magdeburg, Germany (E.D., M.T.); Department of Diagnostic Radiology and Interventional Neuroradiology and Nuclear Medicine, Universitätsklinikum Knappschaftskrankenhaus Bochum, Universitätsklinik der Ruhr-Universität Bochum, Bochum Germany (V.M., S.F.); Department of Neuroradiology, Heidelberg University Hospital, Heidelberg, Germany (M. Möhlenbruch, C.S.W.); Department of Diagnostic and Interventional Neuroradiology, University Medical Centre Goettingen, Goettingen, Germany (M.E., A.J.); Department of Interventional Neuroradiology, Johanna Étienne Hospital, Neuss, Germany (D.M.); Institute of Neuroradiology, Charité Universitätsmedizin Berlin, Berlin, Germany (M. Miszczuk, E.S.); Department of Radiology, Klinikum Osnabrück, Osnabrück, Germany (S.L.); Department of Neurology, Klinikum Osnabrück, Osnabrück, Germany (L.U.K.); Division of Neurology, Department of Medicine, National University Health System, Singapore (L.Y., B.T.); Yong Loo Lin School of Medicine, National University of Singapore, Singapore (L.Y., B.T., A.G.); Division of Interventional Radiology, Department of Diagnostic imaging, National University Health System, Singapore (A.G.); Department of Neuroradiology, University Hospital Bonn, Bonn, Germany (F.D.); Department of Interventional Neuroradiology, Hospital Clínico Universitario de Valladolid, Valladolid, Spain (M.M.G.); Department of Radiology, New York Langone Medical Center, New York, NY (E.R., M.S.); Department of Neuroradiology, Karolinska University Hospital and Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden (F.A., T.A.); Department of Medical Imaging, AZ Groeninge, Kortrijk, Belgium (T.A.); Department of Neurology, Hospital Bremen-Mitte, Bremen, Germany (A. Kastrup); Department of Diagnostic and Interventional Neuroradiology, Hospital Bremen-Mitte, Bremen, Germany (M.A., P.P.); Department of Radiology, Areteion University Hospital, National and Kapodistrian University of Athens, Athens, Greece (P.P.); Department of Neuroradiology, Westpfalz-Klinikum, Kaiserslautern, Germany (W.N.); Department of Neuroradiology, University Hospital Luebeck, Germany (W.N.); Department of Radiology, Comenius University's Jessenius Faculty of Medicine and University Hospital, Martin, Slovakia (K.Z.); Department of Neuroradiology, Hospital Universitario La Paz, Madrid, Spain (P.N.); Department of Neuroradiology, University Hospital Marburg, Marburg, Germany (A. Kemmling); and Stroke Unit, Hospital Clínico Universitario de Valladolid, Valladolid, Spain (J.F.A.L.)., Lowens S; From the Department of Diagnostic and Interventional Neuroradiology, University Medical Center Hamburg-Eppendorf, Martinistrasse 52, 20246 Hamburg, Germany (L.M., P.S., G.B., P.S., J.F., U.H.); Department of Interventional Neuroradiology, University Hospital Muenster, Muenster, Germany (P.S., M.E.); Department of Endovascular Therapy, Alfried-Krupp Hospital Essen, Essen, Germany (R.C.); Department of Diagnostic and Interventional Neuroradiology, University Hospital Basel, Basel, Switzerland (P.S., M.P.); Institute of Diagnostic and Interventional Neuroradiology, Inselspital, Bern University Hospital, University of Bern, Switzerland (E.I.P., J.K.); Department of Diagnostic and Interventional Neuroradiology, Klinikum rechts der Isar, School of Medicine, Technical University Munich, Munich, Germany (C.M., M.R.H.P.); Institute of Neuroradiology, University Hospitals, LMU Munich, Munich, Germany (H.Z., F.D.); Department of Neuroradiology, University of Cologne, Cologne, Germany (N.A., C.K.); Department of Neuroradiology, University Hospital Magdeburg, Magdeburg, Germany (E.D., M.T.); Department of Diagnostic Radiology and Interventional Neuroradiology and Nuclear Medicine, Universitätsklinikum Knappschaftskrankenhaus Bochum, Universitätsklinik der Ruhr-Universität Bochum, Bochum Germany (V.M., S.F.); Department of Neuroradiology, Heidelberg University Hospital, Heidelberg, Germany (M. Möhlenbruch, C.S.W.); Department of Diagnostic and Interventional Neuroradiology, University Medical Centre Goettingen, Goettingen, Germany (M.E., A.J.); Department of Interventional Neuroradiology, Johanna Étienne Hospital, Neuss, Germany (D.M.); Institute of Neuroradiology, Charité Universitätsmedizin Berlin, Berlin, Germany (M. Miszczuk, E.S.); Department of Radiology, Klinikum Osnabrück, Osnabrück, Germany (S.L.); Department of Neurology, Klinikum Osnabrück, Osnabrück, Germany (L.U.K.); Division of Neurology, Department of Medicine, National University Health System, Singapore (L.Y., B.T.); Yong Loo Lin School of Medicine, National University of Singapore, Singapore (L.Y., B.T., A.G.); Division of Interventional Radiology, Department of Diagnostic imaging, National University Health System, Singapore (A.G.); Department of Neuroradiology, University Hospital Bonn, Bonn, Germany (F.D.); Department of Interventional Neuroradiology, Hospital Clínico Universitario de Valladolid, Valladolid, Spain (M.M.G.); Department of Radiology, New York Langone Medical Center, New York, NY (E.R., M.S.); Department of Neuroradiology, Karolinska University Hospital and Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden (F.A., T.A.); Department of Medical Imaging, AZ Groeninge, Kortrijk, Belgium (T.A.); Department of Neurology, Hospital Bremen-Mitte, Bremen, Germany (A. Kastrup); Department of Diagnostic and Interventional Neuroradiology, Hospital Bremen-Mitte, Bremen, Germany (M.A., P.P.); Department of Radiology, Areteion University Hospital, National and Kapodistrian University of Athens, Athens, Greece (P.P.); Department of Neuroradiology, Westpfalz-Klinikum, Kaiserslautern, Germany (W.N.); Department of Neuroradiology, University Hospital Luebeck, Germany (W.N.); Department of Radiology, Comenius University's Jessenius Faculty of Medicine and University Hospital, Martin, Slovakia (K.Z.); Department of Neuroradiology, Hospital Universitario La Paz, Madrid, Spain (P.N.); Department of Neuroradiology, University Hospital Marburg, Marburg, Germany (A. Kemmling); and Stroke Unit, Hospital Clínico Universitario de Valladolid, Valladolid, Spain (J.F.A.L.)., Krause LU; From the Department of Diagnostic and Interventional Neuroradiology, University Medical Center Hamburg-Eppendorf, Martinistrasse 52, 20246 Hamburg, Germany (L.M., P.S., G.B., P.S., J.F., U.H.); Department of Interventional Neuroradiology, University Hospital Muenster, Muenster, Germany (P.S., M.E.); Department of Endovascular Therapy, Alfried-Krupp Hospital Essen, Essen, Germany (R.C.); Department of Diagnostic and Interventional Neuroradiology, University Hospital Basel, Basel, Switzerland (P.S., M.P.); Institute of Diagnostic and Interventional Neuroradiology, Inselspital, Bern University Hospital, University of Bern, Switzerland (E.I.P., J.K.); Department of Diagnostic and Interventional Neuroradiology, Klinikum rechts der Isar, School of Medicine, Technical University Munich, Munich, Germany (C.M., M.R.H.P.); Institute of Neuroradiology, University Hospitals, LMU Munich, Munich, Germany (H.Z., F.D.); Department of Neuroradiology, University of Cologne, Cologne, Germany (N.A., C.K.); Department of Neuroradiology, University Hospital Magdeburg, Magdeburg, Germany (E.D., M.T.); Department of Diagnostic Radiology and Interventional Neuroradiology and Nuclear Medicine, Universitätsklinikum Knappschaftskrankenhaus Bochum, Universitätsklinik der Ruhr-Universität Bochum, Bochum Germany (V.M., S.F.); Department of Neuroradiology, Heidelberg University Hospital, Heidelberg, Germany (M. Möhlenbruch, C.S.W.); Department of Diagnostic and Interventional Neuroradiology, University Medical Centre Goettingen, Goettingen, Germany (M.E., A.J.); Department of Interventional Neuroradiology, Johanna Étienne Hospital, Neuss, Germany (D.M.); Institute of Neuroradiology, Charité Universitätsmedizin Berlin, Berlin, Germany (M. Miszczuk, E.S.); Department of Radiology, Klinikum Osnabrück, Osnabrück, Germany (S.L.); Department of Neurology, Klinikum Osnabrück, Osnabrück, Germany (L.U.K.); Division of Neurology, Department of Medicine, National University Health System, Singapore (L.Y., B.T.); Yong Loo Lin School of Medicine, National University of Singapore, Singapore (L.Y., B.T., A.G.); Division of Interventional Radiology, Department of Diagnostic imaging, National University Health System, Singapore (A.G.); Department of Neuroradiology, University Hospital Bonn, Bonn, Germany (F.D.); Department of Interventional Neuroradiology, Hospital Clínico Universitario de Valladolid, Valladolid, Spain (M.M.G.); Department of Radiology, New York Langone Medical Center, New York, NY (E.R., M.S.); Department of Neuroradiology, Karolinska University Hospital and Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden (F.A., T.A.); Department of Medical Imaging, AZ Groeninge, Kortrijk, Belgium (T.A.); Department of Neurology, Hospital Bremen-Mitte, Bremen, Germany (A. Kastrup); Department of Diagnostic and Interventional Neuroradiology, Hospital Bremen-Mitte, Bremen, Germany (M.A., P.P.); Department of Radiology, Areteion University Hospital, National and Kapodistrian University of Athens, Athens, Greece (P.P.); Department of Neuroradiology, Westpfalz-Klinikum, Kaiserslautern, Germany (W.N.); Department of Neuroradiology, University Hospital Luebeck, Germany (W.N.); Department of Radiology, Comenius University's Jessenius Faculty of Medicine and University Hospital, Martin, Slovakia (K.Z.); Department of Neuroradiology, Hospital Universitario La Paz, Madrid, Spain (P.N.); Department of Neuroradiology, University Hospital Marburg, Marburg, Germany (A. Kemmling); and Stroke Unit, Hospital Clínico Universitario de Valladolid, Valladolid, Spain (J.F.A.L.)., Yeo L; From the Department of Diagnostic and Interventional Neuroradiology, University Medical Center Hamburg-Eppendorf, Martinistrasse 52, 20246 Hamburg, Germany (L.M., P.S., G.B., P.S., J.F., U.H.); Department of Interventional Neuroradiology, University Hospital Muenster, Muenster, Germany (P.S., M.E.); Department of Endovascular Therapy, Alfried-Krupp Hospital Essen, Essen, Germany (R.C.); Department of Diagnostic and Interventional Neuroradiology, University Hospital Basel, Basel, Switzerland (P.S., M.P.); Institute of Diagnostic and Interventional Neuroradiology, Inselspital, Bern University Hospital, University of Bern, Switzerland (E.I.P., J.K.); Department of Diagnostic and Interventional Neuroradiology, Klinikum rechts der Isar, School of Medicine, Technical University Munich, Munich, Germany (C.M., M.R.H.P.); Institute of Neuroradiology, University Hospitals, LMU Munich, Munich, Germany (H.Z., F.D.); Department of Neuroradiology, University of Cologne, Cologne, Germany (N.A., C.K.); Department of Neuroradiology, University Hospital Magdeburg, Magdeburg, Germany (E.D., M.T.); Department of Diagnostic Radiology and Interventional Neuroradiology and Nuclear Medicine, Universitätsklinikum Knappschaftskrankenhaus Bochum, Universitätsklinik der Ruhr-Universität Bochum, Bochum Germany (V.M., S.F.); Department of Neuroradiology, Heidelberg University Hospital, Heidelberg, Germany (M. Möhlenbruch, C.S.W.); Department of Diagnostic and Interventional Neuroradiology, University Medical Centre Goettingen, Goettingen, Germany (M.E., A.J.); Department of Interventional Neuroradiology, Johanna Étienne Hospital, Neuss, Germany (D.M.); Institute of Neuroradiology, Charité Universitätsmedizin Berlin, Berlin, Germany (M. Miszczuk, E.S.); Department of Radiology, Klinikum Osnabrück, Osnabrück, Germany (S.L.); Department of Neurology, Klinikum Osnabrück, Osnabrück, Germany (L.U.K.); Division of Neurology, Department of Medicine, National University Health System, Singapore (L.Y., B.T.); Yong Loo Lin School of Medicine, National University of Singapore, Singapore (L.Y., B.T., A.G.); Division of Interventional Radiology, Department of Diagnostic imaging, National University Health System, Singapore (A.G.); Department of Neuroradiology, University Hospital Bonn, Bonn, Germany (F.D.); Department of Interventional Neuroradiology, Hospital Clínico Universitario de Valladolid, Valladolid, Spain (M.M.G.); Department of Radiology, New York Langone Medical Center, New York, NY (E.R., M.S.); Department of Neuroradiology, Karolinska University Hospital and Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden (F.A., T.A.); Department of Medical Imaging, AZ Groeninge, Kortrijk, Belgium (T.A.); Department of Neurology, Hospital Bremen-Mitte, Bremen, Germany (A. Kastrup); Department of Diagnostic and Interventional Neuroradiology, Hospital Bremen-Mitte, Bremen, Germany (M.A., P.P.); Department of Radiology, Areteion University Hospital, National and Kapodistrian University of Athens, Athens, Greece (P.P.); Department of Neuroradiology, Westpfalz-Klinikum, Kaiserslautern, Germany (W.N.); Department of Neuroradiology, University Hospital Luebeck, Germany (W.N.); Department of Radiology, Comenius University's Jessenius Faculty of Medicine and University Hospital, Martin, Slovakia (K.Z.); Department of Neuroradiology, Hospital Universitario La Paz, Madrid, Spain (P.N.); Department of Neuroradiology, University Hospital Marburg, Marburg, Germany (A. Kemmling); and Stroke Unit, Hospital Clínico Universitario de Valladolid, Valladolid, Spain (J.F.A.L.)., Tan B; From the Department of Diagnostic and Interventional Neuroradiology, University Medical Center Hamburg-Eppendorf, Martinistrasse 52, 20246 Hamburg, Germany (L.M., P.S., G.B., P.S., J.F., U.H.); Department of Interventional Neuroradiology, University Hospital Muenster, Muenster, Germany (P.S., M.E.); Department of Endovascular Therapy, Alfried-Krupp Hospital Essen, Essen, Germany (R.C.); Department of Diagnostic and Interventional Neuroradiology, University Hospital Basel, Basel, Switzerland (P.S., M.P.); Institute of Diagnostic and Interventional Neuroradiology, Inselspital, Bern University Hospital, University of Bern, Switzerland (E.I.P., J.K.); Department of Diagnostic and Interventional Neuroradiology, Klinikum rechts der Isar, School of Medicine, Technical University Munich, Munich, Germany (C.M., M.R.H.P.); Institute of Neuroradiology, University Hospitals, LMU Munich, Munich, Germany (H.Z., F.D.); Department of Neuroradiology, University of Cologne, Cologne, Germany (N.A., C.K.); Department of Neuroradiology, University Hospital Magdeburg, Magdeburg, Germany (E.D., M.T.); Department of Diagnostic Radiology and Interventional Neuroradiology and Nuclear Medicine, Universitätsklinikum Knappschaftskrankenhaus Bochum, Universitätsklinik der Ruhr-Universität Bochum, Bochum Germany (V.M., S.F.); Department of Neuroradiology, Heidelberg University Hospital, Heidelberg, Germany (M. Möhlenbruch, C.S.W.); Department of Diagnostic and Interventional Neuroradiology, University Medical Centre Goettingen, Goettingen, Germany (M.E., A.J.); Department of Interventional Neuroradiology, Johanna Étienne Hospital, Neuss, Germany (D.M.); Institute of Neuroradiology, Charité Universitätsmedizin Berlin, Berlin, Germany (M. Miszczuk, E.S.); Department of Radiology, Klinikum Osnabrück, Osnabrück, Germany (S.L.); Department of Neurology, Klinikum Osnabrück, Osnabrück, Germany (L.U.K.); Division of Neurology, Department of Medicine, National University Health System, Singapore (L.Y., B.T.); Yong Loo Lin School of Medicine, National University of Singapore, Singapore (L.Y., B.T., A.G.); Division of Interventional Radiology, Department of Diagnostic imaging, National University Health System, Singapore (A.G.); Department of Neuroradiology, University Hospital Bonn, Bonn, Germany (F.D.); Department of Interventional Neuroradiology, Hospital Clínico Universitario de Valladolid, Valladolid, Spain (M.M.G.); Department of Radiology, New York Langone Medical Center, New York, NY (E.R., M.S.); Department of Neuroradiology, Karolinska University Hospital and Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden (F.A., T.A.); Department of Medical Imaging, AZ Groeninge, Kortrijk, Belgium (T.A.); Department of Neurology, Hospital Bremen-Mitte, Bremen, Germany (A. Kastrup); Department of Diagnostic and Interventional Neuroradiology, Hospital Bremen-Mitte, Bremen, Germany (M.A., P.P.); Department of Radiology, Areteion University Hospital, National and Kapodistrian University of Athens, Athens, Greece (P.P.); Department of Neuroradiology, Westpfalz-Klinikum, Kaiserslautern, Germany (W.N.); Department of Neuroradiology, University Hospital Luebeck, Germany (W.N.); Department of Radiology, Comenius University's Jessenius Faculty of Medicine and University Hospital, Martin, Slovakia (K.Z.); Department of Neuroradiology, Hospital Universitario La Paz, Madrid, Spain (P.N.); Department of Neuroradiology, University Hospital Marburg, Marburg, Germany (A. Kemmling); and Stroke Unit, Hospital Clínico Universitario de Valladolid, Valladolid, Spain (J.F.A.L.)., Gopinathan A; From the Department of Diagnostic and Interventional Neuroradiology, University Medical Center Hamburg-Eppendorf, Martinistrasse 52, 20246 Hamburg, Germany (L.M., P.S., G.B., P.S., J.F., U.H.); Department of Interventional Neuroradiology, University Hospital Muenster, Muenster, Germany (P.S., M.E.); Department of Endovascular Therapy, Alfried-Krupp Hospital Essen, Essen, Germany (R.C.); Department of Diagnostic and Interventional Neuroradiology, University Hospital Basel, Basel, Switzerland (P.S., M.P.); Institute of Diagnostic and Interventional Neuroradiology, Inselspital, Bern University Hospital, University of Bern, Switzerland (E.I.P., J.K.); Department of Diagnostic and Interventional Neuroradiology, Klinikum rechts der Isar, School of Medicine, Technical University Munich, Munich, Germany (C.M., M.R.H.P.); Institute of Neuroradiology, University Hospitals, LMU Munich, Munich, Germany (H.Z., F.D.); Department of Neuroradiology, University of Cologne, Cologne, Germany (N.A., C.K.); Department of Neuroradiology, University Hospital Magdeburg, Magdeburg, Germany (E.D., M.T.); Department of Diagnostic Radiology and Interventional Neuroradiology and Nuclear Medicine, Universitätsklinikum Knappschaftskrankenhaus Bochum, Universitätsklinik der Ruhr-Universität Bochum, Bochum Germany (V.M., S.F.); Department of Neuroradiology, Heidelberg University Hospital, Heidelberg, Germany (M. Möhlenbruch, C.S.W.); Department of Diagnostic and Interventional Neuroradiology, University Medical Centre Goettingen, Goettingen, Germany (M.E., A.J.); Department of Interventional Neuroradiology, Johanna Étienne Hospital, Neuss, Germany (D.M.); Institute of Neuroradiology, Charité Universitätsmedizin Berlin, Berlin, Germany (M. Miszczuk, E.S.); Department of Radiology, Klinikum Osnabrück, Osnabrück, Germany (S.L.); Department of Neurology, Klinikum Osnabrück, Osnabrück, Germany (L.U.K.); Division of Neurology, Department of Medicine, National University Health System, Singapore (L.Y., B.T.); Yong Loo Lin School of Medicine, National University of Singapore, Singapore (L.Y., B.T., A.G.); Division of Interventional Radiology, Department of Diagnostic imaging, National University Health System, Singapore (A.G.); Department of Neuroradiology, University Hospital Bonn, Bonn, Germany (F.D.); Department of Interventional Neuroradiology, Hospital Clínico Universitario de Valladolid, Valladolid, Spain (M.M.G.); Department of Radiology, New York Langone Medical Center, New York, NY (E.R., M.S.); Department of Neuroradiology, Karolinska University Hospital and Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden (F.A., T.A.); Department of Medical Imaging, AZ Groeninge, Kortrijk, Belgium (T.A.); Department of Neurology, Hospital Bremen-Mitte, Bremen, Germany (A. Kastrup); Department of Diagnostic and Interventional Neuroradiology, Hospital Bremen-Mitte, Bremen, Germany (M.A., P.P.); Department of Radiology, Areteion University Hospital, National and Kapodistrian University of Athens, Athens, Greece (P.P.); Department of Neuroradiology, Westpfalz-Klinikum, Kaiserslautern, Germany (W.N.); Department of Neuroradiology, University Hospital Luebeck, Germany (W.N.); Department of Radiology, Comenius University's Jessenius Faculty of Medicine and University Hospital, Martin, Slovakia (K.Z.); Department of Neuroradiology, Hospital Universitario La Paz, Madrid, Spain (P.N.); Department of Neuroradiology, University Hospital Marburg, Marburg, Germany (A. Kemmling); and Stroke Unit, Hospital Clínico Universitario de Valladolid, Valladolid, Spain (J.F.A.L.)., Arenillas-Lara JF; From the Department of Diagnostic and Interventional Neuroradiology, University Medical Center Hamburg-Eppendorf, Martinistrasse 52, 20246 Hamburg, Germany (L.M., P.S., G.B., P.S., J.F., U.H.); Department of Interventional Neuroradiology, University Hospital Muenster, Muenster, Germany (P.S., M.E.); Department of Endovascular Therapy, Alfried-Krupp Hospital Essen, Essen, Germany (R.C.); Department of Diagnostic and Interventional Neuroradiology, University Hospital Basel, Basel, Switzerland (P.S., M.P.); Institute of Diagnostic and Interventional Neuroradiology, Inselspital, Bern University Hospital, University of Bern, Switzerland (E.I.P., J.K.); Department of Diagnostic and Interventional Neuroradiology, Klinikum rechts der Isar, School of Medicine, Technical University Munich, Munich, Germany (C.M., M.R.H.P.); Institute of Neuroradiology, University Hospitals, LMU Munich, Munich, Germany (H.Z., F.D.); Department of Neuroradiology, University of Cologne, Cologne, Germany (N.A., C.K.); Department of Neuroradiology, University Hospital Magdeburg, Magdeburg, Germany (E.D., M.T.); Department of Diagnostic Radiology and Interventional Neuroradiology and Nuclear Medicine, Universitätsklinikum Knappschaftskrankenhaus Bochum, Universitätsklinik der Ruhr-Universität Bochum, Bochum Germany (V.M., S.F.); Department of Neuroradiology, Heidelberg University Hospital, Heidelberg, Germany (M. Möhlenbruch, C.S.W.); Department of Diagnostic and Interventional Neuroradiology, University Medical Centre Goettingen, Goettingen, Germany (M.E., A.J.); Department of Interventional Neuroradiology, Johanna Étienne Hospital, Neuss, Germany (D.M.); Institute of Neuroradiology, Charité Universitätsmedizin Berlin, Berlin, Germany (M. Miszczuk, E.S.); Department of Radiology, Klinikum Osnabrück, Osnabrück, Germany (S.L.); Department of Neurology, Klinikum Osnabrück, Osnabrück, Germany (L.U.K.); Division of Neurology, Department of Medicine, National University Health System, Singapore (L.Y., B.T.); Yong Loo Lin School of Medicine, National University of Singapore, Singapore (L.Y., B.T., A.G.); Division of Interventional Radiology, Department of Diagnostic imaging, National University Health System, Singapore (A.G.); Department of Neuroradiology, University Hospital Bonn, Bonn, Germany (F.D.); Department of Interventional Neuroradiology, Hospital Clínico Universitario de Valladolid, Valladolid, Spain (M.M.G.); Department of Radiology, New York Langone Medical Center, New York, NY (E.R., M.S.); Department of Neuroradiology, Karolinska University Hospital and Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden (F.A., T.A.); Department of Medical Imaging, AZ Groeninge, Kortrijk, Belgium (T.A.); Department of Neurology, Hospital Bremen-Mitte, Bremen, Germany (A. Kastrup); Department of Diagnostic and Interventional Neuroradiology, Hospital Bremen-Mitte, Bremen, Germany (M.A., P.P.); Department of Radiology, Areteion University Hospital, National and Kapodistrian University of Athens, Athens, Greece (P.P.); Department of Neuroradiology, Westpfalz-Klinikum, Kaiserslautern, Germany (W.N.); Department of Neuroradiology, University Hospital Luebeck, Germany (W.N.); Department of Radiology, Comenius University's Jessenius Faculty of Medicine and University Hospital, Martin, Slovakia (K.Z.); Department of Neuroradiology, Hospital Universitario La Paz, Madrid, Spain (P.N.); Department of Neuroradiology, University Hospital Marburg, Marburg, Germany (A. Kemmling); and Stroke Unit, Hospital Clínico Universitario de Valladolid, Valladolid, Spain (J.F.A.L.)., Navia P; From the Department of Diagnostic and Interventional Neuroradiology, University Medical Center Hamburg-Eppendorf, Martinistrasse 52, 20246 Hamburg, Germany (L.M., P.S., G.B., P.S., J.F., U.H.); Department of Interventional Neuroradiology, University Hospital Muenster, Muenster, Germany (P.S., M.E.); Department of Endovascular Therapy, Alfried-Krupp Hospital Essen, Essen, Germany (R.C.); Department of Diagnostic and Interventional Neuroradiology, University Hospital Basel, Basel, Switzerland (P.S., M.P.); Institute of Diagnostic and Interventional Neuroradiology, Inselspital, Bern University Hospital, University of Bern, Switzerland (E.I.P., J.K.); Department of Diagnostic and Interventional Neuroradiology, Klinikum rechts der Isar, School of Medicine, Technical University Munich, Munich, Germany (C.M., M.R.H.P.); Institute of Neuroradiology, University Hospitals, LMU Munich, Munich, Germany (H.Z., F.D.); Department of Neuroradiology, University of Cologne, Cologne, Germany (N.A., C.K.); Department of Neuroradiology, University Hospital Magdeburg, Magdeburg, Germany (E.D., M.T.); Department of Diagnostic Radiology and Interventional Neuroradiology and Nuclear Medicine, Universitätsklinikum Knappschaftskrankenhaus Bochum, Universitätsklinik der Ruhr-Universität Bochum, Bochum Germany (V.M., S.F.); Department of Neuroradiology, Heidelberg University Hospital, Heidelberg, Germany (M. Möhlenbruch, C.S.W.); Department of Diagnostic and Interventional Neuroradiology, University Medical Centre Goettingen, Goettingen, Germany (M.E., A.J.); Department of Interventional Neuroradiology, Johanna Étienne Hospital, Neuss, Germany (D.M.); Institute of Neuroradiology, Charité Universitätsmedizin Berlin, Berlin, Germany (M. Miszczuk, E.S.); Department of Radiology, Klinikum Osnabrück, Osnabrück, Germany (S.L.); Department of Neurology, Klinikum Osnabrück, Osnabrück, Germany (L.U.K.); Division of Neurology, Department of Medicine, National University Health System, Singapore (L.Y., B.T.); Yong Loo Lin School of Medicine, National University of Singapore, Singapore (L.Y., B.T., A.G.); Division of Interventional Radiology, Department of Diagnostic imaging, National University Health System, Singapore (A.G.); Department of Neuroradiology, University Hospital Bonn, Bonn, Germany (F.D.); Department of Interventional Neuroradiology, Hospital Clínico Universitario de Valladolid, Valladolid, Spain (M.M.G.); Department of Radiology, New York Langone Medical Center, New York, NY (E.R., M.S.); Department of Neuroradiology, Karolinska University Hospital and Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden (F.A., T.A.); Department of Medical Imaging, AZ Groeninge, Kortrijk, Belgium (T.A.); Department of Neurology, Hospital Bremen-Mitte, Bremen, Germany (A. Kastrup); Department of Diagnostic and Interventional Neuroradiology, Hospital Bremen-Mitte, Bremen, Germany (M.A., P.P.); Department of Radiology, Areteion University Hospital, National and Kapodistrian University of Athens, Athens, Greece (P.P.); Department of Neuroradiology, Westpfalz-Klinikum, Kaiserslautern, Germany (W.N.); Department of Neuroradiology, University Hospital Luebeck, Germany (W.N.); Department of Radiology, Comenius University's Jessenius Faculty of Medicine and University Hospital, Martin, Slovakia (K.Z.); Department of Neuroradiology, Hospital Universitario La Paz, Madrid, Spain (P.N.); Department of Neuroradiology, University Hospital Marburg, Marburg, Germany (A. Kemmling); and Stroke Unit, Hospital Clínico Universitario de Valladolid, Valladolid, Spain (J.F.A.L.)., Raz E; From the Department of Diagnostic and Interventional Neuroradiology, University Medical Center Hamburg-Eppendorf, Martinistrasse 52, 20246 Hamburg, Germany (L.M., P.S., G.B., P.S., J.F., U.H.); Department of Interventional Neuroradiology, University Hospital Muenster, Muenster, Germany (P.S., M.E.); Department of Endovascular Therapy, Alfried-Krupp Hospital Essen, Essen, Germany (R.C.); Department of Diagnostic and Interventional Neuroradiology, University Hospital Basel, Basel, Switzerland (P.S., M.P.); Institute of Diagnostic and Interventional Neuroradiology, Inselspital, Bern University Hospital, University of Bern, Switzerland (E.I.P., J.K.); Department of Diagnostic and Interventional Neuroradiology, Klinikum rechts der Isar, School of Medicine, Technical University Munich, Munich, Germany (C.M., M.R.H.P.); Institute of Neuroradiology, University Hospitals, LMU Munich, Munich, Germany (H.Z., F.D.); Department of Neuroradiology, University of Cologne, Cologne, Germany (N.A., C.K.); Department of Neuroradiology, University Hospital Magdeburg, Magdeburg, Germany (E.D., M.T.); Department of Diagnostic Radiology and Interventional Neuroradiology and Nuclear Medicine, Universitätsklinikum Knappschaftskrankenhaus Bochum, Universitätsklinik der Ruhr-Universität Bochum, Bochum Germany (V.M., S.F.); Department of Neuroradiology, Heidelberg University Hospital, Heidelberg, Germany (M. Möhlenbruch, C.S.W.); Department of Diagnostic and Interventional Neuroradiology, University Medical Centre Goettingen, Goettingen, Germany (M.E., A.J.); Department of Interventional Neuroradiology, Johanna Étienne Hospital, Neuss, Germany (D.M.); Institute of Neuroradiology, Charité Universitätsmedizin Berlin, Berlin, Germany (M. Miszczuk, E.S.); Department of Radiology, Klinikum Osnabrück, Osnabrück, Germany (S.L.); Department of Neurology, Klinikum Osnabrück, Osnabrück, Germany (L.U.K.); Division of Neurology, Department of Medicine, National University Health System, Singapore (L.Y., B.T.); Yong Loo Lin School of Medicine, National University of Singapore, Singapore (L.Y., B.T., A.G.); Division of Interventional Radiology, Department of Diagnostic imaging, National University Health System, Singapore (A.G.); Department of Neuroradiology, University Hospital Bonn, Bonn, Germany (F.D.); Department of Interventional Neuroradiology, Hospital Clínico Universitario de Valladolid, Valladolid, Spain (M.M.G.); Department of Radiology, New York Langone Medical Center, New York, NY (E.R., M.S.); Department of Neuroradiology, Karolinska University Hospital and Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden (F.A., T.A.); Department of Medical Imaging, AZ Groeninge, Kortrijk, Belgium (T.A.); Department of Neurology, Hospital Bremen-Mitte, Bremen, Germany (A. Kastrup); Department of Diagnostic and Interventional Neuroradiology, Hospital Bremen-Mitte, Bremen, Germany (M.A., P.P.); Department of Radiology, Areteion University Hospital, National and Kapodistrian University of Athens, Athens, Greece (P.P.); Department of Neuroradiology, Westpfalz-Klinikum, Kaiserslautern, Germany (W.N.); Department of Neuroradiology, University Hospital Luebeck, Germany (W.N.); Department of Radiology, Comenius University's Jessenius Faculty of Medicine and University Hospital, Martin, Slovakia (K.Z.); Department of Neuroradiology, Hospital Universitario La Paz, Madrid, Spain (P.N.); Department of Neuroradiology, University Hospital Marburg, Marburg, Germany (A. Kemmling); and Stroke Unit, Hospital Clínico Universitario de Valladolid, Valladolid, Spain (J.F.A.L.)., Shapiro M; From the Department of Diagnostic and Interventional Neuroradiology, University Medical Center Hamburg-Eppendorf, Martinistrasse 52, 20246 Hamburg, Germany (L.M., P.S., G.B., P.S., J.F., U.H.); Department of Interventional Neuroradiology, University Hospital Muenster, Muenster, Germany (P.S., M.E.); Department of Endovascular Therapy, Alfried-Krupp Hospital Essen, Essen, Germany (R.C.); Department of Diagnostic and Interventional Neuroradiology, University Hospital Basel, Basel, Switzerland (P.S., M.P.); Institute of Diagnostic and Interventional Neuroradiology, Inselspital, Bern University Hospital, University of Bern, Switzerland (E.I.P., J.K.); Department of Diagnostic and Interventional Neuroradiology, Klinikum rechts der Isar, School of Medicine, Technical University Munich, Munich, Germany (C.M., M.R.H.P.); Institute of Neuroradiology, University Hospitals, LMU Munich, Munich, Germany (H.Z., F.D.); Department of Neuroradiology, University of Cologne, Cologne, Germany (N.A., C.K.); Department of Neuroradiology, University Hospital Magdeburg, Magdeburg, Germany (E.D., M.T.); Department of Diagnostic Radiology and Interventional Neuroradiology and Nuclear Medicine, Universitätsklinikum Knappschaftskrankenhaus Bochum, Universitätsklinik der Ruhr-Universität Bochum, Bochum Germany (V.M., S.F.); Department of Neuroradiology, Heidelberg University Hospital, Heidelberg, Germany (M. Möhlenbruch, C.S.W.); Department of Diagnostic and Interventional Neuroradiology, University Medical Centre Goettingen, Goettingen, Germany (M.E., A.J.); Department of Interventional Neuroradiology, Johanna Étienne Hospital, Neuss, Germany (D.M.); Institute of Neuroradiology, Charité Universitätsmedizin Berlin, Berlin, Germany (M. Miszczuk, E.S.); Department of Radiology, Klinikum Osnabrück, Osnabrück, Germany (S.L.); Department of Neurology, Klinikum Osnabrück, Osnabrück, Germany (L.U.K.); Division of Neurology, Department of Medicine, National University Health System, Singapore (L.Y., B.T.); Yong Loo Lin School of Medicine, National University of Singapore, Singapore (L.Y., B.T., A.G.); Division of Interventional Radiology, Department of Diagnostic imaging, National University Health System, Singapore (A.G.); Department of Neuroradiology, University Hospital Bonn, Bonn, Germany (F.D.); Department of Interventional Neuroradiology, Hospital Clínico Universitario de Valladolid, Valladolid, Spain (M.M.G.); Department of Radiology, New York Langone Medical Center, New York, NY (E.R., M.S.); Department of Neuroradiology, Karolinska University Hospital and Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden (F.A., T.A.); Department of Medical Imaging, AZ Groeninge, Kortrijk, Belgium (T.A.); Department of Neurology, Hospital Bremen-Mitte, Bremen, Germany (A. Kastrup); Department of Diagnostic and Interventional Neuroradiology, Hospital Bremen-Mitte, Bremen, Germany (M.A., P.P.); Department of Radiology, Areteion University Hospital, National and Kapodistrian University of Athens, Athens, Greece (P.P.); Department of Neuroradiology, Westpfalz-Klinikum, Kaiserslautern, Germany (W.N.); Department of Neuroradiology, University Hospital Luebeck, Germany (W.N.); Department of Radiology, Comenius University's Jessenius Faculty of Medicine and University Hospital, Martin, Slovakia (K.Z.); Department of Neuroradiology, Hospital Universitario La Paz, Madrid, Spain (P.N.); Department of Neuroradiology, University Hospital Marburg, Marburg, Germany (A. Kemmling); and Stroke Unit, Hospital Clínico Universitario de Valladolid, Valladolid, Spain (J.F.A.L.)., Arnberg F; From the Department of Diagnostic and Interventional Neuroradiology, University Medical Center Hamburg-Eppendorf, Martinistrasse 52, 20246 Hamburg, Germany (L.M., P.S., G.B., P.S., J.F., U.H.); Department of Interventional Neuroradiology, University Hospital Muenster, Muenster, Germany (P.S., M.E.); Department of Endovascular Therapy, Alfried-Krupp Hospital Essen, Essen, Germany (R.C.); Department of Diagnostic and Interventional Neuroradiology, University Hospital Basel, Basel, Switzerland (P.S., M.P.); Institute of Diagnostic and Interventional Neuroradiology, Inselspital, Bern University Hospital, University of Bern, Switzerland (E.I.P., J.K.); Department of Diagnostic and Interventional Neuroradiology, Klinikum rechts der Isar, School of Medicine, Technical University Munich, Munich, Germany (C.M., M.R.H.P.); Institute of Neuroradiology, University Hospitals, LMU Munich, Munich, Germany (H.Z., F.D.); Department of Neuroradiology, University of Cologne, Cologne, Germany (N.A., C.K.); Department of Neuroradiology, University Hospital Magdeburg, Magdeburg, Germany (E.D., M.T.); Department of Diagnostic Radiology and Interventional Neuroradiology and Nuclear Medicine, Universitätsklinikum Knappschaftskrankenhaus Bochum, Universitätsklinik der Ruhr-Universität Bochum, Bochum Germany (V.M., S.F.); Department of Neuroradiology, Heidelberg University Hospital, Heidelberg, Germany (M. Möhlenbruch, C.S.W.); Department of Diagnostic and Interventional Neuroradiology, University Medical Centre Goettingen, Goettingen, Germany (M.E., A.J.); Department of Interventional Neuroradiology, Johanna Étienne Hospital, Neuss, Germany (D.M.); Institute of Neuroradiology, Charité Universitätsmedizin Berlin, Berlin, Germany (M. Miszczuk, E.S.); Department of Radiology, Klinikum Osnabrück, Osnabrück, Germany (S.L.); Department of Neurology, Klinikum Osnabrück, Osnabrück, Germany (L.U.K.); Division of Neurology, Department of Medicine, National University Health System, Singapore (L.Y., B.T.); Yong Loo Lin School of Medicine, National University of Singapore, Singapore (L.Y., B.T., A.G.); Division of Interventional Radiology, Department of Diagnostic imaging, National University Health System, Singapore (A.G.); Department of Neuroradiology, University Hospital Bonn, Bonn, Germany (F.D.); Department of Interventional Neuroradiology, Hospital Clínico Universitario de Valladolid, Valladolid, Spain (M.M.G.); Department of Radiology, New York Langone Medical Center, New York, NY (E.R., M.S.); Department of Neuroradiology, Karolinska University Hospital and Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden (F.A., T.A.); Department of Medical Imaging, AZ Groeninge, Kortrijk, Belgium (T.A.); Department of Neurology, Hospital Bremen-Mitte, Bremen, Germany (A. Kastrup); Department of Diagnostic and Interventional Neuroradiology, Hospital Bremen-Mitte, Bremen, Germany (M.A., P.P.); Department of Radiology, Areteion University Hospital, National and Kapodistrian University of Athens, Athens, Greece (P.P.); Department of Neuroradiology, Westpfalz-Klinikum, Kaiserslautern, Germany (W.N.); Department of Neuroradiology, University Hospital Luebeck, Germany (W.N.); Department of Radiology, Comenius University's Jessenius Faculty of Medicine and University Hospital, Martin, Slovakia (K.Z.); Department of Neuroradiology, Hospital Universitario La Paz, Madrid, Spain (P.N.); Department of Neuroradiology, University Hospital Marburg, Marburg, Germany (A. Kemmling); and Stroke Unit, Hospital Clínico Universitario de Valladolid, Valladolid, Spain (J.F.A.L.)., Zeleňák K; From the Department of Diagnostic and Interventional Neuroradiology, University Medical Center Hamburg-Eppendorf, Martinistrasse 52, 20246 Hamburg, Germany (L.M., P.S., G.B., P.S., J.F., U.H.); Department of Interventional Neuroradiology, University Hospital Muenster, Muenster, Germany (P.S., M.E.); Department of Endovascular Therapy, Alfried-Krupp Hospital Essen, Essen, Germany (R.C.); Department of Diagnostic and Interventional Neuroradiology, University Hospital Basel, Basel, Switzerland (P.S., M.P.); Institute of Diagnostic and Interventional Neuroradiology, Inselspital, Bern University Hospital, University of Bern, Switzerland (E.I.P., J.K.); Department of Diagnostic and Interventional Neuroradiology, Klinikum rechts der Isar, School of Medicine, Technical University Munich, Munich, Germany (C.M., M.R.H.P.); Institute of Neuroradiology, University Hospitals, LMU Munich, Munich, Germany (H.Z., F.D.); Department of Neuroradiology, University of Cologne, Cologne, Germany (N.A., C.K.); Department of Neuroradiology, University Hospital Magdeburg, Magdeburg, Germany (E.D., M.T.); Department of Diagnostic Radiology and Interventional Neuroradiology and Nuclear Medicine, Universitätsklinikum Knappschaftskrankenhaus Bochum, Universitätsklinik der Ruhr-Universität Bochum, Bochum Germany (V.M., S.F.); Department of Neuroradiology, Heidelberg University Hospital, Heidelberg, Germany (M. Möhlenbruch, C.S.W.); Department of Diagnostic and Interventional Neuroradiology, University Medical Centre Goettingen, Goettingen, Germany (M.E., A.J.); Department of Interventional Neuroradiology, Johanna Étienne Hospital, Neuss, Germany (D.M.); Institute of Neuroradiology, Charité Universitätsmedizin Berlin, Berlin, Germany (M. Miszczuk, E.S.); Department of Radiology, Klinikum Osnabrück, Osnabrück, Germany (S.L.); Department of Neurology, Klinikum Osnabrück, Osnabrück, Germany (L.U.K.); Division of Neurology, Department of Medicine, National University Health System, Singapore (L.Y., B.T.); Yong Loo Lin School of Medicine, National University of Singapore, Singapore (L.Y., B.T., A.G.); Division of Interventional Radiology, Department of Diagnostic imaging, National University Health System, Singapore (A.G.); Department of Neuroradiology, University Hospital Bonn, Bonn, Germany (F.D.); Department of Interventional Neuroradiology, Hospital Clínico Universitario de Valladolid, Valladolid, Spain (M.M.G.); Department of Radiology, New York Langone Medical Center, New York, NY (E.R., M.S.); Department of Neuroradiology, Karolinska University Hospital and Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden (F.A., T.A.); Department of Medical Imaging, AZ Groeninge, Kortrijk, Belgium (T.A.); Department of Neurology, Hospital Bremen-Mitte, Bremen, Germany (A. Kastrup); Department of Diagnostic and Interventional Neuroradiology, Hospital Bremen-Mitte, Bremen, Germany (M.A., P.P.); Department of Radiology, Areteion University Hospital, National and Kapodistrian University of Athens, Athens, Greece (P.P.); Department of Neuroradiology, Westpfalz-Klinikum, Kaiserslautern, Germany (W.N.); Department of Neuroradiology, University Hospital Luebeck, Germany (W.N.); Department of Radiology, Comenius University's Jessenius Faculty of Medicine and University Hospital, Martin, Slovakia (K.Z.); Department of Neuroradiology, Hospital Universitario La Paz, Madrid, Spain (P.N.); Department of Neuroradiology, University Hospital Marburg, Marburg, Germany (A. Kemmling); and Stroke Unit, Hospital Clínico Universitario de Valladolid, Valladolid, Spain (J.F.A.L.)., Martínez-Galdámez M; From the Department of Diagnostic and Interventional Neuroradiology, University Medical Center Hamburg-Eppendorf, Martinistrasse 52, 20246 Hamburg, Germany (L.M., P.S., G.B., P.S., J.F., U.H.); Department of Interventional Neuroradiology, University Hospital Muenster, Muenster, Germany (P.S., M.E.); Department of Endovascular Therapy, Alfried-Krupp Hospital Essen, Essen, Germany (R.C.); Department of Diagnostic and Interventional Neuroradiology, University Hospital Basel, Basel, Switzerland (P.S., M.P.); Institute of Diagnostic and Interventional Neuroradiology, Inselspital, Bern University Hospital, University of Bern, Switzerland (E.I.P., J.K.); Department of Diagnostic and Interventional Neuroradiology, Klinikum rechts der Isar, School of Medicine, Technical University Munich, Munich, Germany (C.M., M.R.H.P.); Institute of Neuroradiology, University Hospitals, LMU Munich, Munich, Germany (H.Z., F.D.); Department of Neuroradiology, University of Cologne, Cologne, Germany (N.A., C.K.); Department of Neuroradiology, University Hospital Magdeburg, Magdeburg, Germany (E.D., M.T.); Department of Diagnostic Radiology and Interventional Neuroradiology and Nuclear Medicine, Universitätsklinikum Knappschaftskrankenhaus Bochum, Universitätsklinik der Ruhr-Universität Bochum, Bochum Germany (V.M., S.F.); Department of Neuroradiology, Heidelberg University Hospital, Heidelberg, Germany (M. Möhlenbruch, C.S.W.); Department of Diagnostic and Interventional Neuroradiology, University Medical Centre Goettingen, Goettingen, Germany (M.E., A.J.); Department of Interventional Neuroradiology, Johanna Étienne Hospital, Neuss, Germany (D.M.); Institute of Neuroradiology, Charité Universitätsmedizin Berlin, Berlin, Germany (M. Miszczuk, E.S.); Department of Radiology, Klinikum Osnabrück, Osnabrück, Germany (S.L.); Department of Neurology, Klinikum Osnabrück, Osnabrück, Germany (L.U.K.); Division of Neurology, Department of Medicine, National University Health System, Singapore (L.Y., B.T.); Yong Loo Lin School of Medicine, National University of Singapore, Singapore (L.Y., B.T., A.G.); Division of Interventional Radiology, Department of Diagnostic imaging, National University Health System, Singapore (A.G.); Department of Neuroradiology, University Hospital Bonn, Bonn, Germany (F.D.); Department of Interventional Neuroradiology, Hospital Clínico Universitario de Valladolid, Valladolid, Spain (M.M.G.); Department of Radiology, New York Langone Medical Center, New York, NY (E.R., M.S.); Department of Neuroradiology, Karolinska University Hospital and Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden (F.A., T.A.); Department of Medical Imaging, AZ Groeninge, Kortrijk, Belgium (T.A.); Department of Neurology, Hospital Bremen-Mitte, Bremen, Germany (A. Kastrup); Department of Diagnostic and Interventional Neuroradiology, Hospital Bremen-Mitte, Bremen, Germany (M.A., P.P.); Department of Radiology, Areteion University Hospital, National and Kapodistrian University of Athens, Athens, Greece (P.P.); Department of Neuroradiology, Westpfalz-Klinikum, Kaiserslautern, Germany (W.N.); Department of Neuroradiology, University Hospital Luebeck, Germany (W.N.); Department of Radiology, Comenius University's Jessenius Faculty of Medicine and University Hospital, Martin, Slovakia (K.Z.); Department of Neuroradiology, Hospital Universitario La Paz, Madrid, Spain (P.N.); Department of Neuroradiology, University Hospital Marburg, Marburg, Germany (A. Kemmling); and Stroke Unit, Hospital Clínico Universitario de Valladolid, Valladolid, Spain (J.F.A.L.)., Alexandrou M; From the Department of Diagnostic and Interventional Neuroradiology, University Medical Center Hamburg-Eppendorf, Martinistrasse 52, 20246 Hamburg, Germany (L.M., P.S., G.B., P.S., J.F., U.H.); Department of Interventional Neuroradiology, University Hospital Muenster, Muenster, Germany (P.S., M.E.); Department of Endovascular Therapy, Alfried-Krupp Hospital Essen, Essen, Germany (R.C.); Department of Diagnostic and Interventional Neuroradiology, University Hospital Basel, Basel, Switzerland (P.S., M.P.); Institute of Diagnostic and Interventional Neuroradiology, Inselspital, Bern University Hospital, University of Bern, Switzerland (E.I.P., J.K.); Department of Diagnostic and Interventional Neuroradiology, Klinikum rechts der Isar, School of Medicine, Technical University Munich, Munich, Germany (C.M., M.R.H.P.); Institute of Neuroradiology, University Hospitals, LMU Munich, Munich, Germany (H.Z., F.D.); Department of Neuroradiology, University of Cologne, Cologne, Germany (N.A., C.K.); Department of Neuroradiology, University Hospital Magdeburg, Magdeburg, Germany (E.D., M.T.); Department of Diagnostic Radiology and Interventional Neuroradiology and Nuclear Medicine, Universitätsklinikum Knappschaftskrankenhaus Bochum, Universitätsklinik der Ruhr-Universität Bochum, Bochum Germany (V.M., S.F.); Department of Neuroradiology, Heidelberg University Hospital, Heidelberg, Germany (M. Möhlenbruch, C.S.W.); Department of Diagnostic and Interventional Neuroradiology, University Medical Centre Goettingen, Goettingen, Germany (M.E., A.J.); Department of Interventional Neuroradiology, Johanna Étienne Hospital, Neuss, Germany (D.M.); Institute of Neuroradiology, Charité Universitätsmedizin Berlin, Berlin, Germany (M. Miszczuk, E.S.); Department of Radiology, Klinikum Osnabrück, Osnabrück, Germany (S.L.); Department of Neurology, Klinikum Osnabrück, Osnabrück, Germany (L.U.K.); Division of Neurology, Department of Medicine, National University Health System, Singapore (L.Y., B.T.); Yong Loo Lin School of Medicine, National University of Singapore, Singapore (L.Y., B.T., A.G.); Division of Interventional Radiology, Department of Diagnostic imaging, National University Health System, Singapore (A.G.); Department of Neuroradiology, University Hospital Bonn, Bonn, Germany (F.D.); Department of Interventional Neuroradiology, Hospital Clínico Universitario de Valladolid, Valladolid, Spain (M.M.G.); Department of Radiology, New York Langone Medical Center, New York, NY (E.R., M.S.); Department of Neuroradiology, Karolinska University Hospital and Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden (F.A., T.A.); Department of Medical Imaging, AZ Groeninge, Kortrijk, Belgium (T.A.); Department of Neurology, Hospital Bremen-Mitte, Bremen, Germany (A. Kastrup); Department of Diagnostic and Interventional Neuroradiology, Hospital Bremen-Mitte, Bremen, Germany (M.A., P.P.); Department of Radiology, Areteion University Hospital, National and Kapodistrian University of Athens, Athens, Greece (P.P.); Department of Neuroradiology, Westpfalz-Klinikum, Kaiserslautern, Germany (W.N.); Department of Neuroradiology, University Hospital Luebeck, Germany (W.N.); Department of Radiology, Comenius University's Jessenius Faculty of Medicine and University Hospital, Martin, Slovakia (K.Z.); Department of Neuroradiology, Hospital Universitario La Paz, Madrid, Spain (P.N.); Department of Neuroradiology, University Hospital Marburg, Marburg, Germany (A. Kemmling); and Stroke Unit, Hospital Clínico Universitario de Valladolid, Valladolid, Spain (J.F.A.L.)., Kastrup A; From the Department of Diagnostic and Interventional Neuroradiology, University Medical Center Hamburg-Eppendorf, Martinistrasse 52, 20246 Hamburg, Germany (L.M., P.S., G.B., P.S., J.F., U.H.); Department of Interventional Neuroradiology, University Hospital Muenster, Muenster, Germany (P.S., M.E.); Department of Endovascular Therapy, Alfried-Krupp Hospital Essen, Essen, Germany (R.C.); Department of Diagnostic and Interventional Neuroradiology, University Hospital Basel, Basel, Switzerland (P.S., M.P.); Institute of Diagnostic and Interventional Neuroradiology, Inselspital, Bern University Hospital, University of Bern, Switzerland (E.I.P., J.K.); Department of Diagnostic and Interventional Neuroradiology, Klinikum rechts der Isar, School of Medicine, Technical University Munich, Munich, Germany (C.M., M.R.H.P.); Institute of Neuroradiology, University Hospitals, LMU Munich, Munich, Germany (H.Z., F.D.); Department of Neuroradiology, University of Cologne, Cologne, Germany (N.A., C.K.); Department of Neuroradiology, University Hospital Magdeburg, Magdeburg, Germany (E.D., M.T.); Department of Diagnostic Radiology and Interventional Neuroradiology and Nuclear Medicine, Universitätsklinikum Knappschaftskrankenhaus Bochum, Universitätsklinik der Ruhr-Universität Bochum, Bochum Germany (V.M., S.F.); Department of Neuroradiology, Heidelberg University Hospital, Heidelberg, Germany (M. Möhlenbruch, C.S.W.); Department of Diagnostic and Interventional Neuroradiology, University Medical Centre Goettingen, Goettingen, Germany (M.E., A.J.); Department of Interventional Neuroradiology, Johanna Étienne Hospital, Neuss, Germany (D.M.); Institute of Neuroradiology, Charité Universitätsmedizin Berlin, Berlin, Germany (M. Miszczuk, E.S.); Department of Radiology, Klinikum Osnabrück, Osnabrück, Germany (S.L.); Department of Neurology, Klinikum Osnabrück, Osnabrück, Germany (L.U.K.); Division of Neurology, Department of Medicine, National University Health System, Singapore (L.Y., B.T.); Yong Loo Lin School of Medicine, National University of Singapore, Singapore (L.Y., B.T., A.G.); Division of Interventional Radiology, Department of Diagnostic imaging, National University Health System, Singapore (A.G.); Department of Neuroradiology, University Hospital Bonn, Bonn, Germany (F.D.); Department of Interventional Neuroradiology, Hospital Clínico Universitario de Valladolid, Valladolid, Spain (M.M.G.); Department of Radiology, New York Langone Medical Center, New York, NY (E.R., M.S.); Department of Neuroradiology, Karolinska University Hospital and Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden (F.A., T.A.); Department of Medical Imaging, AZ Groeninge, Kortrijk, Belgium (T.A.); Department of Neurology, Hospital Bremen-Mitte, Bremen, Germany (A. Kastrup); Department of Diagnostic and Interventional Neuroradiology, Hospital Bremen-Mitte, Bremen, Germany (M.A., P.P.); Department of Radiology, Areteion University Hospital, National and Kapodistrian University of Athens, Athens, Greece (P.P.); Department of Neuroradiology, Westpfalz-Klinikum, Kaiserslautern, Germany (W.N.); Department of Neuroradiology, University Hospital Luebeck, Germany (W.N.); Department of Radiology, Comenius University's Jessenius Faculty of Medicine and University Hospital, Martin, Slovakia (K.Z.); Department of Neuroradiology, Hospital Universitario La Paz, Madrid, Spain (P.N.); Department of Neuroradiology, University Hospital Marburg, Marburg, Germany (A. Kemmling); and Stroke Unit, Hospital Clínico Universitario de Valladolid, Valladolid, Spain (J.F.A.L.)., Papanagiotou P; From the Department of Diagnostic and Interventional Neuroradiology, University Medical Center Hamburg-Eppendorf, Martinistrasse 52, 20246 Hamburg, Germany (L.M., P.S., G.B., P.S., J.F., U.H.); Department of Interventional Neuroradiology, University Hospital Muenster, Muenster, Germany (P.S., M.E.); Department of Endovascular Therapy, Alfried-Krupp Hospital Essen, Essen, Germany (R.C.); Department of Diagnostic and Interventional Neuroradiology, University Hospital Basel, Basel, Switzerland (P.S., M.P.); Institute of Diagnostic and Interventional Neuroradiology, Inselspital, Bern University Hospital, University of Bern, Switzerland (E.I.P., J.K.); Department of Diagnostic and Interventional Neuroradiology, Klinikum rechts der Isar, School of Medicine, Technical University Munich, Munich, Germany (C.M., M.R.H.P.); Institute of Neuroradiology, University Hospitals, LMU Munich, Munich, Germany (H.Z., F.D.); Department of Neuroradiology, University of Cologne, Cologne, Germany (N.A., C.K.); Department of Neuroradiology, University Hospital Magdeburg, Magdeburg, Germany (E.D., M.T.); Department of Diagnostic Radiology and Interventional Neuroradiology and Nuclear Medicine, Universitätsklinikum Knappschaftskrankenhaus Bochum, Universitätsklinik der Ruhr-Universität Bochum, Bochum Germany (V.M., S.F.); Department of Neuroradiology, Heidelberg University Hospital, Heidelberg, Germany (M. Möhlenbruch, C.S.W.); Department of Diagnostic and Interventional Neuroradiology, University Medical Centre Goettingen, Goettingen, Germany (M.E., A.J.); Department of Interventional Neuroradiology, Johanna Étienne Hospital, Neuss, Germany (D.M.); Institute of Neuroradiology, Charité Universitätsmedizin Berlin, Berlin, Germany (M. Miszczuk, E.S.); Department of Radiology, Klinikum Osnabrück, Osnabrück, Germany (S.L.); Department of Neurology, Klinikum Osnabrück, Osnabrück, Germany (L.U.K.); Division of Neurology, Department of Medicine, National University Health System, Singapore (L.Y., B.T.); Yong Loo Lin School of Medicine, National University of Singapore, Singapore (L.Y., B.T., A.G.); Division of Interventional Radiology, Department of Diagnostic imaging, National University Health System, Singapore (A.G.); Department of Neuroradiology, University Hospital Bonn, Bonn, Germany (F.D.); Department of Interventional Neuroradiology, Hospital Clínico Universitario de Valladolid, Valladolid, Spain (M.M.G.); Department of Radiology, New York Langone Medical Center, New York, NY (E.R., M.S.); Department of Neuroradiology, Karolinska University Hospital and Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden (F.A., T.A.); Department of Medical Imaging, AZ Groeninge, Kortrijk, Belgium (T.A.); Department of Neurology, Hospital Bremen-Mitte, Bremen, Germany (A. Kastrup); Department of Diagnostic and Interventional Neuroradiology, Hospital Bremen-Mitte, Bremen, Germany (M.A., P.P.); Department of Radiology, Areteion University Hospital, National and Kapodistrian University of Athens, Athens, Greece (P.P.); Department of Neuroradiology, Westpfalz-Klinikum, Kaiserslautern, Germany (W.N.); Department of Neuroradiology, University Hospital Luebeck, Germany (W.N.); Department of Radiology, Comenius University's Jessenius Faculty of Medicine and University Hospital, Martin, Slovakia (K.Z.); Department of Neuroradiology, Hospital Universitario La Paz, Madrid, Spain (P.N.); Department of Neuroradiology, University Hospital Marburg, Marburg, Germany (A. Kemmling); and Stroke Unit, Hospital Clínico Universitario de Valladolid, Valladolid, Spain (J.F.A.L.)., Kemmling A; From the Department of Diagnostic and Interventional Neuroradiology, University Medical Center Hamburg-Eppendorf, Martinistrasse 52, 20246 Hamburg, Germany (L.M., P.S., G.B., P.S., J.F., U.H.); Department of Interventional Neuroradiology, University Hospital Muenster, Muenster, Germany (P.S., M.E.); Department of Endovascular Therapy, Alfried-Krupp Hospital Essen, Essen, Germany (R.C.); Department of Diagnostic and Interventional Neuroradiology, University Hospital Basel, Basel, Switzerland (P.S., M.P.); Institute of Diagnostic and Interventional Neuroradiology, Inselspital, Bern University Hospital, University of Bern, Switzerland (E.I.P., J.K.); Department of Diagnostic and Interventional Neuroradiology, Klinikum rechts der Isar, School of Medicine, Technical University Munich, Munich, Germany (C.M., M.R.H.P.); Institute of Neuroradiology, University Hospitals, LMU Munich, Munich, Germany (H.Z., F.D.); Department of Neuroradiology, University of Cologne, Cologne, Germany (N.A., C.K.); Department of Neuroradiology, University Hospital Magdeburg, Magdeburg, Germany (E.D., M.T.); Department of Diagnostic Radiology and Interventional Neuroradiology and Nuclear Medicine, Universitätsklinikum Knappschaftskrankenhaus Bochum, Universitätsklinik der Ruhr-Universität Bochum, Bochum Germany (V.M., S.F.); Department of Neuroradiology, Heidelberg University Hospital, Heidelberg, Germany (M. Möhlenbruch, C.S.W.); Department of Diagnostic and Interventional Neuroradiology, University Medical Centre Goettingen, Goettingen, Germany (M.E., A.J.); Department of Interventional Neuroradiology, Johanna Étienne Hospital, Neuss, Germany (D.M.); Institute of Neuroradiology, Charité Universitätsmedizin Berlin, Berlin, Germany (M. Miszczuk, E.S.); Department of Radiology, Klinikum Osnabrück, Osnabrück, Germany (S.L.); Department of Neurology, Klinikum Osnabrück, Osnabrück, Germany (L.U.K.); Division of Neurology, Department of Medicine, National University Health System, Singapore (L.Y., B.T.); Yong Loo Lin School of Medicine, National University of Singapore, Singapore (L.Y., B.T., A.G.); Division of Interventional Radiology, Department of Diagnostic imaging, National University Health System, Singapore (A.G.); Department of Neuroradiology, University Hospital Bonn, Bonn, Germany (F.D.); Department of Interventional Neuroradiology, Hospital Clínico Universitario de Valladolid, Valladolid, Spain (M.M.G.); Department of Radiology, New York Langone Medical Center, New York, NY (E.R., M.S.); Department of Neuroradiology, Karolinska University Hospital and Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden (F.A., T.A.); Department of Medical Imaging, AZ Groeninge, Kortrijk, Belgium (T.A.); Department of Neurology, Hospital Bremen-Mitte, Bremen, Germany (A. Kastrup); Department of Diagnostic and Interventional Neuroradiology, Hospital Bremen-Mitte, Bremen, Germany (M.A., P.P.); Department of Radiology, Areteion University Hospital, National and Kapodistrian University of Athens, Athens, Greece (P.P.); Department of Neuroradiology, Westpfalz-Klinikum, Kaiserslautern, Germany (W.N.); Department of Neuroradiology, University Hospital Luebeck, Germany (W.N.); Department of Radiology, Comenius University's Jessenius Faculty of Medicine and University Hospital, Martin, Slovakia (K.Z.); Department of Neuroradiology, Hospital Universitario La Paz, Madrid, Spain (P.N.); Department of Neuroradiology, University Hospital Marburg, Marburg, Germany (A. Kemmling); and Stroke Unit, Hospital Clínico Universitario de Valladolid, Valladolid, Spain (J.F.A.L.)., Dorn F; From the Department of Diagnostic and Interventional Neuroradiology, University Medical Center Hamburg-Eppendorf, Martinistrasse 52, 20246 Hamburg, Germany (L.M., P.S., G.B., P.S., J.F., U.H.); Department of Interventional Neuroradiology, University Hospital Muenster, Muenster, Germany (P.S., M.E.); Department of Endovascular Therapy, Alfried-Krupp Hospital Essen, Essen, Germany (R.C.); Department of Diagnostic and Interventional Neuroradiology, University Hospital Basel, Basel, Switzerland (P.S., M.P.); Institute of Diagnostic and Interventional Neuroradiology, Inselspital, Bern University Hospital, University of Bern, Switzerland (E.I.P., J.K.); Department of Diagnostic and Interventional Neuroradiology, Klinikum rechts der Isar, School of Medicine, Technical University Munich, Munich, Germany (C.M., M.R.H.P.); Institute of Neuroradiology, University Hospitals, LMU Munich, Munich, Germany (H.Z., F.D.); Department of Neuroradiology, University of Cologne, Cologne, Germany (N.A., C.K.); Department of Neuroradiology, University Hospital Magdeburg, Magdeburg, Germany (E.D., M.T.); Department of Diagnostic Radiology and Interventional Neuroradiology and Nuclear Medicine, Universitätsklinikum Knappschaftskrankenhaus Bochum, Universitätsklinik der Ruhr-Universität Bochum, Bochum Germany (V.M., S.F.); Department of Neuroradiology, Heidelberg University Hospital, Heidelberg, Germany (M. Möhlenbruch, C.S.W.); Department of Diagnostic and Interventional Neuroradiology, University Medical Centre Goettingen, Goettingen, Germany (M.E., A.J.); Department of Interventional Neuroradiology, Johanna Étienne Hospital, Neuss, Germany (D.M.); Institute of Neuroradiology, Charité Universitätsmedizin Berlin, Berlin, Germany (M. Miszczuk, E.S.); Department of Radiology, Klinikum Osnabrück, Osnabrück, Germany (S.L.); Department of Neurology, Klinikum Osnabrück, Osnabrück, Germany (L.U.K.); Division of Neurology, Department of Medicine, National University Health System, Singapore (L.Y., B.T.); Yong Loo Lin School of Medicine, National University of Singapore, Singapore (L.Y., B.T., A.G.); Division of Interventional Radiology, Department of Diagnostic imaging, National University Health System, Singapore (A.G.); Department of Neuroradiology, University Hospital Bonn, Bonn, Germany (F.D.); Department of Interventional Neuroradiology, Hospital Clínico Universitario de Valladolid, Valladolid, Spain (M.M.G.); Department of Radiology, New York Langone Medical Center, New York, NY (E.R., M.S.); Department of Neuroradiology, Karolinska University Hospital and Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden (F.A., T.A.); Department of Medical Imaging, AZ Groeninge, Kortrijk, Belgium (T.A.); Department of Neurology, Hospital Bremen-Mitte, Bremen, Germany (A. Kastrup); Department of Diagnostic and Interventional Neuroradiology, Hospital Bremen-Mitte, Bremen, Germany (M.A., P.P.); Department of Radiology, Areteion University Hospital, National and Kapodistrian University of Athens, Athens, Greece (P.P.); Department of Neuroradiology, Westpfalz-Klinikum, Kaiserslautern, Germany (W.N.); Department of Neuroradiology, University Hospital Luebeck, Germany (W.N.); Department of Radiology, Comenius University's Jessenius Faculty of Medicine and University Hospital, Martin, Slovakia (K.Z.); Department of Neuroradiology, Hospital Universitario La Paz, Madrid, Spain (P.N.); Department of Neuroradiology, University Hospital Marburg, Marburg, Germany (A. Kemmling); and Stroke Unit, Hospital Clínico Universitario de Valladolid, Valladolid, Spain (J.F.A.L.)., Psychogios M; From the Department of Diagnostic and Interventional Neuroradiology, University Medical Center Hamburg-Eppendorf, Martinistrasse 52, 20246 Hamburg, Germany (L.M., P.S., G.B., P.S., J.F., U.H.); Department of Interventional Neuroradiology, University Hospital Muenster, Muenster, Germany (P.S., M.E.); Department of Endovascular Therapy, Alfried-Krupp Hospital Essen, Essen, Germany (R.C.); Department of Diagnostic and Interventional Neuroradiology, University Hospital Basel, Basel, Switzerland (P.S., M.P.); Institute of Diagnostic and Interventional Neuroradiology, Inselspital, Bern University Hospital, University of Bern, Switzerland (E.I.P., J.K.); Department of Diagnostic and Interventional Neuroradiology, Klinikum rechts der Isar, School of Medicine, Technical University Munich, Munich, Germany (C.M., M.R.H.P.); Institute of Neuroradiology, University Hospitals, LMU Munich, Munich, Germany (H.Z., F.D.); Department of Neuroradiology, University of Cologne, Cologne, Germany (N.A., C.K.); Department of Neuroradiology, University Hospital Magdeburg, Magdeburg, Germany (E.D., M.T.); Department of Diagnostic Radiology and Interventional Neuroradiology and Nuclear Medicine, Universitätsklinikum Knappschaftskrankenhaus Bochum, Universitätsklinik der Ruhr-Universität Bochum, Bochum Germany (V.M., S.F.); Department of Neuroradiology, Heidelberg University Hospital, Heidelberg, Germany (M. Möhlenbruch, C.S.W.); Department of Diagnostic and Interventional Neuroradiology, University Medical Centre Goettingen, Goettingen, Germany (M.E., A.J.); Department of Interventional Neuroradiology, Johanna Étienne Hospital, Neuss, Germany (D.M.); Institute of Neuroradiology, Charité Universitätsmedizin Berlin, Berlin, Germany (M. Miszczuk, E.S.); Department of Radiology, Klinikum Osnabrück, Osnabrück, Germany (S.L.); Department of Neurology, Klinikum Osnabrück, Osnabrück, Germany (L.U.K.); Division of Neurology, Department of Medicine, National University Health System, Singapore (L.Y., B.T.); Yong Loo Lin School of Medicine, National University of Singapore, Singapore (L.Y., B.T., A.G.); Division of Interventional Radiology, Department of Diagnostic imaging, National University Health System, Singapore (A.G.); Department of Neuroradiology, University Hospital Bonn, Bonn, Germany (F.D.); Department of Interventional Neuroradiology, Hospital Clínico Universitario de Valladolid, Valladolid, Spain (M.M.G.); Department of Radiology, New York Langone Medical Center, New York, NY (E.R., M.S.); Department of Neuroradiology, Karolinska University Hospital and Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden (F.A., T.A.); Department of Medical Imaging, AZ Groeninge, Kortrijk, Belgium (T.A.); Department of Neurology, Hospital Bremen-Mitte, Bremen, Germany (A. Kastrup); Department of Diagnostic and Interventional Neuroradiology, Hospital Bremen-Mitte, Bremen, Germany (M.A., P.P.); Department of Radiology, Areteion University Hospital, National and Kapodistrian University of Athens, Athens, Greece (P.P.); Department of Neuroradiology, Westpfalz-Klinikum, Kaiserslautern, Germany (W.N.); Department of Neuroradiology, University Hospital Luebeck, Germany (W.N.); Department of Radiology, Comenius University's Jessenius Faculty of Medicine and University Hospital, Martin, Slovakia (K.Z.); Department of Neuroradiology, Hospital Universitario La Paz, Madrid, Spain (P.N.); Department of Neuroradiology, University Hospital Marburg, Marburg, Germany (A. Kemmling); and Stroke Unit, Hospital Clínico Universitario de Valladolid, Valladolid, Spain (J.F.A.L.)., Andersson T; From the Department of Diagnostic and Interventional Neuroradiology, University Medical Center Hamburg-Eppendorf, Martinistrasse 52, 20246 Hamburg, Germany (L.M., P.S., G.B., P.S., J.F., U.H.); Department of Interventional Neuroradiology, University Hospital Muenster, Muenster, Germany (P.S., M.E.); Department of Endovascular Therapy, Alfried-Krupp Hospital Essen, Essen, Germany (R.C.); Department of Diagnostic and Interventional Neuroradiology, University Hospital Basel, Basel, Switzerland (P.S., M.P.); Institute of Diagnostic and Interventional Neuroradiology, Inselspital, Bern University Hospital, University of Bern, Switzerland (E.I.P., J.K.); Department of Diagnostic and Interventional Neuroradiology, Klinikum rechts der Isar, School of Medicine, Technical University Munich, Munich, Germany (C.M., M.R.H.P.); Institute of Neuroradiology, University Hospitals, LMU Munich, Munich, Germany (H.Z., F.D.); Department of Neuroradiology, University of Cologne, Cologne, Germany (N.A., C.K.); Department of Neuroradiology, University Hospital Magdeburg, Magdeburg, Germany (E.D., M.T.); Department of Diagnostic Radiology and Interventional Neuroradiology and Nuclear Medicine, Universitätsklinikum Knappschaftskrankenhaus Bochum, Universitätsklinik der Ruhr-Universität Bochum, Bochum Germany (V.M., S.F.); Department of Neuroradiology, Heidelberg University Hospital, Heidelberg, Germany (M. Möhlenbruch, C.S.W.); Department of Diagnostic and Interventional Neuroradiology, University Medical Centre Goettingen, Goettingen, Germany (M.E., A.J.); Department of Interventional Neuroradiology, Johanna Étienne Hospital, Neuss, Germany (D.M.); Institute of Neuroradiology, Charité Universitätsmedizin Berlin, Berlin, Germany (M. Miszczuk, E.S.); Department of Radiology, Klinikum Osnabrück, Osnabrück, Germany (S.L.); Department of Neurology, Klinikum Osnabrück, Osnabrück, Germany (L.U.K.); Division of Neurology, Department of Medicine, National University Health System, Singapore (L.Y., B.T.); Yong Loo Lin School of Medicine, National University of Singapore, Singapore (L.Y., B.T., A.G.); Division of Interventional Radiology, Department of Diagnostic imaging, National University Health System, Singapore (A.G.); Department of Neuroradiology, University Hospital Bonn, Bonn, Germany (F.D.); Department of Interventional Neuroradiology, Hospital Clínico Universitario de Valladolid, Valladolid, Spain (M.M.G.); Department of Radiology, New York Langone Medical Center, New York, NY (E.R., M.S.); Department of Neuroradiology, Karolinska University Hospital and Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden (F.A., T.A.); Department of Medical Imaging, AZ Groeninge, Kortrijk, Belgium (T.A.); Department of Neurology, Hospital Bremen-Mitte, Bremen, Germany (A. Kastrup); Department of Diagnostic and Interventional Neuroradiology, Hospital Bremen-Mitte, Bremen, Germany (M.A., P.P.); Department of Radiology, Areteion University Hospital, National and Kapodistrian University of Athens, Athens, Greece (P.P.); Department of Neuroradiology, Westpfalz-Klinikum, Kaiserslautern, Germany (W.N.); Department of Neuroradiology, University Hospital Luebeck, Germany (W.N.); Department of Radiology, Comenius University's Jessenius Faculty of Medicine and University Hospital, Martin, Slovakia (K.Z.); Department of Neuroradiology, Hospital Universitario La Paz, Madrid, Spain (P.N.); Department of Neuroradiology, University Hospital Marburg, Marburg, Germany (A. Kemmling); and Stroke Unit, Hospital Clínico Universitario de Valladolid, Valladolid, Spain (J.F.A.L.)., Chapot R; From the Department of Diagnostic and Interventional Neuroradiology, University Medical Center Hamburg-Eppendorf, Martinistrasse 52, 20246 Hamburg, Germany (L.M., P.S., G.B., P.S., J.F., U.H.); Department of Interventional Neuroradiology, University Hospital Muenster, Muenster, Germany (P.S., M.E.); Department of Endovascular Therapy, Alfried-Krupp Hospital Essen, Essen, Germany (R.C.); Department of Diagnostic and Interventional Neuroradiology, University Hospital Basel, Basel, Switzerland (P.S., M.P.); Institute of Diagnostic and Interventional Neuroradiology, Inselspital, Bern University Hospital, University of Bern, Switzerland (E.I.P., J.K.); Department of Diagnostic and Interventional Neuroradiology, Klinikum rechts der Isar, School of Medicine, Technical University Munich, Munich, Germany (C.M., M.R.H.P.); Institute of Neuroradiology, University Hospitals, LMU Munich, Munich, Germany (H.Z., F.D.); Department of Neuroradiology, University of Cologne, Cologne, Germany (N.A., C.K.); Department of Neuroradiology, University Hospital Magdeburg, Magdeburg, Germany (E.D., M.T.); Department of Diagnostic Radiology and Interventional Neuroradiology and Nuclear Medicine, Universitätsklinikum Knappschaftskrankenhaus Bochum, Universitätsklinik der Ruhr-Universität Bochum, Bochum Germany (V.M., S.F.); Department of Neuroradiology, Heidelberg University Hospital, Heidelberg, Germany (M. Möhlenbruch, C.S.W.); Department of Diagnostic and Interventional Neuroradiology, University Medical Centre Goettingen, Goettingen, Germany (M.E., A.J.); Department of Interventional Neuroradiology, Johanna Étienne Hospital, Neuss, Germany (D.M.); Institute of Neuroradiology, Charité Universitätsmedizin Berlin, Berlin, Germany (M. Miszczuk, E.S.); Department of Radiology, Klinikum Osnabrück, Osnabrück, Germany (S.L.); Department of Neurology, Klinikum Osnabrück, Osnabrück, Germany (L.U.K.); Division of Neurology, Department of Medicine, National University Health System, Singapore (L.Y., B.T.); Yong Loo Lin School of Medicine, National University of Singapore, Singapore (L.Y., B.T., A.G.); Division of Interventional Radiology, Department of Diagnostic imaging, National University Health System, Singapore (A.G.); Department of Neuroradiology, University Hospital Bonn, Bonn, Germany (F.D.); Department of Interventional Neuroradiology, Hospital Clínico Universitario de Valladolid, Valladolid, Spain (M.M.G.); Department of Radiology, New York Langone Medical Center, New York, NY (E.R., M.S.); Department of Neuroradiology, Karolinska University Hospital and Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden (F.A., T.A.); Department of Medical Imaging, AZ Groeninge, Kortrijk, Belgium (T.A.); Department of Neurology, Hospital Bremen-Mitte, Bremen, Germany (A. Kastrup); Department of Diagnostic and Interventional Neuroradiology, Hospital Bremen-Mitte, Bremen, Germany (M.A., P.P.); Department of Radiology, Areteion University Hospital, National and Kapodistrian University of Athens, Athens, Greece (P.P.); Department of Neuroradiology, Westpfalz-Klinikum, Kaiserslautern, Germany (W.N.); Department of Neuroradiology, University Hospital Luebeck, Germany (W.N.); Department of Radiology, Comenius University's Jessenius Faculty of Medicine and University Hospital, Martin, Slovakia (K.Z.); Department of Neuroradiology, Hospital Universitario La Paz, Madrid, Spain (P.N.); Department of Neuroradiology, University Hospital Marburg, Marburg, Germany (A. Kemmling); and Stroke Unit, Hospital Clínico Universitario de Valladolid, Valladolid, Spain (J.F.A.L.)., Fiehler J; From the Department of Diagnostic and Interventional Neuroradiology, University Medical Center Hamburg-Eppendorf, Martinistrasse 52, 20246 Hamburg, Germany (L.M., P.S., G.B., P.S., J.F., U.H.); Department of Interventional Neuroradiology, University Hospital Muenster, Muenster, Germany (P.S., M.E.); Department of Endovascular Therapy, Alfried-Krupp Hospital Essen, Essen, Germany (R.C.); Department of Diagnostic and Interventional Neuroradiology, University Hospital Basel, Basel, Switzerland (P.S., M.P.); Institute of Diagnostic and Interventional Neuroradiology, Inselspital, Bern University Hospital, University of Bern, Switzerland (E.I.P., J.K.); Department of Diagnostic and Interventional Neuroradiology, Klinikum rechts der Isar, School of Medicine, Technical University Munich, Munich, Germany (C.M., M.R.H.P.); Institute of Neuroradiology, University Hospitals, LMU Munich, Munich, Germany (H.Z., F.D.); Department of Neuroradiology, University of Cologne, Cologne, Germany (N.A., C.K.); Department of Neuroradiology, University Hospital Magdeburg, Magdeburg, Germany (E.D., M.T.); Department of Diagnostic Radiology and Interventional Neuroradiology and Nuclear Medicine, Universitätsklinikum Knappschaftskrankenhaus Bochum, Universitätsklinik der Ruhr-Universität Bochum, Bochum Germany (V.M., S.F.); Department of Neuroradiology, Heidelberg University Hospital, Heidelberg, Germany (M. Möhlenbruch, C.S.W.); Department of Diagnostic and Interventional Neuroradiology, University Medical Centre Goettingen, Goettingen, Germany (M.E., A.J.); Department of Interventional Neuroradiology, Johanna Étienne Hospital, Neuss, Germany (D.M.); Institute of Neuroradiology, Charité Universitätsmedizin Berlin, Berlin, Germany (M. Miszczuk, E.S.); Department of Radiology, Klinikum Osnabrück, Osnabrück, Germany (S.L.); Department of Neurology, Klinikum Osnabrück, Osnabrück, Germany (L.U.K.); Division of Neurology, Department of Medicine, National University Health System, Singapore (L.Y., B.T.); Yong Loo Lin School of Medicine, National University of Singapore, Singapore (L.Y., B.T., A.G.); Division of Interventional Radiology, Department of Diagnostic imaging, National University Health System, Singapore (A.G.); Department of Neuroradiology, University Hospital Bonn, Bonn, Germany (F.D.); Department of Interventional Neuroradiology, Hospital Clínico Universitario de Valladolid, Valladolid, Spain (M.M.G.); Department of Radiology, New York Langone Medical Center, New York, NY (E.R., M.S.); Department of Neuroradiology, Karolinska University Hospital and Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden (F.A., T.A.); Department of Medical Imaging, AZ Groeninge, Kortrijk, Belgium (T.A.); Department of Neurology, Hospital Bremen-Mitte, Bremen, Germany (A. Kastrup); Department of Diagnostic and Interventional Neuroradiology, Hospital Bremen-Mitte, Bremen, Germany (M.A., P.P.); Department of Radiology, Areteion University Hospital, National and Kapodistrian University of Athens, Athens, Greece (P.P.); Department of Neuroradiology, Westpfalz-Klinikum, Kaiserslautern, Germany (W.N.); Department of Neuroradiology, University Hospital Luebeck, Germany (W.N.); Department of Radiology, Comenius University's Jessenius Faculty of Medicine and University Hospital, Martin, Slovakia (K.Z.); Department of Neuroradiology, Hospital Universitario La Paz, Madrid, Spain (P.N.); Department of Neuroradiology, University Hospital Marburg, Marburg, Germany (A. Kemmling); and Stroke Unit, Hospital Clínico Universitario de Valladolid, Valladolid, Spain (J.F.A.L.)., Hanning U; From the Department of Diagnostic and Interventional Neuroradiology, University Medical Center Hamburg-Eppendorf, Martinistrasse 52, 20246 Hamburg, Germany (L.M., P.S., G.B., P.S., J.F., U.H.); Department of Interventional Neuroradiology, University Hospital Muenster, Muenster, Germany (P.S., M.E.); Department of Endovascular Therapy, Alfried-Krupp Hospital Essen, Essen, Germany (R.C.); Department of Diagnostic and Interventional Neuroradiology, University Hospital Basel, Basel, Switzerland (P.S., M.P.); Institute of Diagnostic and Interventional Neuroradiology, Inselspital, Bern University Hospital, University of Bern, Switzerland (E.I.P., J.K.); Department of Diagnostic and Interventional Neuroradiology, Klinikum rechts der Isar, School of Medicine, Technical University Munich, Munich, Germany (C.M., M.R.H.P.); Institute of Neuroradiology, University Hospitals, LMU Munich, Munich, Germany (H.Z., F.D.); Department of Neuroradiology, University of Cologne, Cologne, Germany (N.A., C.K.); Department of Neuroradiology, University Hospital Magdeburg, Magdeburg, Germany (E.D., M.T.); Department of Diagnostic Radiology and Interventional Neuroradiology and Nuclear Medicine, Universitätsklinikum Knappschaftskrankenhaus Bochum, Universitätsklinik der Ruhr-Universität Bochum, Bochum Germany (V.M., S.F.); Department of Neuroradiology, Heidelberg University Hospital, Heidelberg, Germany (M. Möhlenbruch, C.S.W.); Department of Diagnostic and Interventional Neuroradiology, University Medical Centre Goettingen, Goettingen, Germany (M.E., A.J.); Department of Interventional Neuroradiology, Johanna Étienne Hospital, Neuss, Germany (D.M.); Institute of Neuroradiology, Charité Universitätsmedizin Berlin, Berlin, Germany (M. Miszczuk, E.S.); Department of Radiology, Klinikum Osnabrück, Osnabrück, Germany (S.L.); Department of Neurology, Klinikum Osnabrück, Osnabrück, Germany (L.U.K.); Division of Neurology, Department of Medicine, National University Health System, Singapore (L.Y., B.T.); Yong Loo Lin School of Medicine, National University of Singapore, Singapore (L.Y., B.T., A.G.); Division of Interventional Radiology, Department of Diagnostic imaging, National University Health System, Singapore (A.G.); Department of Neuroradiology, University Hospital Bonn, Bonn, Germany (F.D.); Department of Interventional Neuroradiology, Hospital Clínico Universitario de Valladolid, Valladolid, Spain (M.M.G.); Department of Radiology, New York Langone Medical Center, New York, NY (E.R., M.S.); Department of Neuroradiology, Karolinska University Hospital and Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden (F.A., T.A.); Department of Medical Imaging, AZ Groeninge, Kortrijk, Belgium (T.A.); Department of Neurology, Hospital Bremen-Mitte, Bremen, Germany (A. Kastrup); Department of Diagnostic and Interventional Neuroradiology, Hospital Bremen-Mitte, Bremen, Germany (M.A., P.P.); Department of Radiology, Areteion University Hospital, National and Kapodistrian University of Athens, Athens, Greece (P.P.); Department of Neuroradiology, Westpfalz-Klinikum, Kaiserslautern, Germany (W.N.); Department of Neuroradiology, University Hospital Luebeck, Germany (W.N.); Department of Radiology, Comenius University's Jessenius Faculty of Medicine and University Hospital, Martin, Slovakia (K.Z.); Department of Neuroradiology, Hospital Universitario La Paz, Madrid, Spain (P.N.); Department of Neuroradiology, University Hospital Marburg, Marburg, Germany (A. Kemmling); and Stroke Unit, Hospital Clínico Universitario de Valladolid, Valladolid, Spain (J.F.A.L.). |