Zobrazeno 1 - 10
of 70
pro vyhledávání: '"Johannes A. Schaar"'
Autor:
Wim J. van der Giessen, Jolanda J. Wentzel, Johan C.H. Schuurbiers, Cornelis J. Slager, Frank J. H. Gijsen, Attila Thury, Frits Mastik, Johannes A. Schaar, Patrick W. Serruys, Anton F. W. van der Steen, Pim J. de Feyter
Publikováno v:
American Journal of Physiology-Heart and Circulatory Physiology, 295(4), H1608-H1614. American Physiological Society
Once plaques intrude into the lumen, the shear stress they are exposed to alters with hitherto unknown consequences for plaque composition. We investigated the relationship between shear stress and strain, a marker for plaque composition, in human co
Autor:
Frits Mastik, Johannes A. Schaar, Patrick W. Serruys, R.A. Baldewsing, Anton F. W. van der Steen
Publikováno v:
Journal of the American College of Cardiology, 47(8), C86-C91. Elsevier Inc.
Palpography assesses the local mechanical properties of tissue using the deformation caused by the intraluminal pressure. The technique was validated in vitro using diseased human coronary and femoral arteries. Especially between fibrous and fatty ti
Autor:
Chris L. de Korte, Johannes A. Schaar, Patrick W. Serruys, Francesco Saia, S. Cornacchia, Antonius F.W. van der Steen, Frits Mastik, Pim J. de Feyter
Publikováno v:
Journal of Mechanics in Medicine and Biology. :35-38
Acute coronary syndromes originate from atherosclerotic plaque rupture and subsequent developement of coronary thrombosis. Available screening and diagnostic methods are insufficient to identify the atherosclerotic plaques that will rupture and preci
Autor:
Johannes A. Schaar, Patrick W. Serruys, Frits Mastik, Andrew Zalewski, Nico R. Mollet, Marco Valgimigli, Filippo Cademartiri, Georgios Sianos, Eugene P. McFadden, Marie-Angèle Morel, Bianca Backx, Gerrit-Anne van Es, Pim J. de Feyter, Carlos Van Mieghem, Sebastiaan de Winter, Nico Bruining, Dick Goedhart, Gaston A. Rodriguez Granillo, Anton F. W. van der Steen, Willem J. van der Giessen
Publikováno v:
Journal of the American College of Cardiology, 47(6), 1134-1142. Elsevier Inc.
Objectives Our purpose was to assess noninvasive imaging in detection of subclinical atherosclerosis and to examine novel invasive modalities to describe prevalence and temporal changes in putative characteristics of “high-risk” plaques. Backgrou
Autor:
Paolo Ortolani, Evelyn Regar, Tullio Palmerini, Johannes A. Schaar, Patrick W. Serruys, Cinzia Marrozzini, Angelo Branzi, Frits Mastik, Antonio Marzocchi, Francesco Saia, Pim J. de Feyter, Gaston A. Rodriguez, Antonius F.W. van der Steen
Publikováno v:
Journal of Cardiovascular Medicine (Hagerstown), 7(1), 21-28. Lippincott Williams & Wilkins
Rupture of a vulnerable plaque is the main cause of acute coronary syndromes and myocardial infarction. The features of rupture-prone atherosclerotic plaques have been previously described by pathologists. However, identification of vulnerable plaque
Autor:
M.E. Frijlink, David E. Goertz, Nico de Jong, Folkert J. ten Cate, Johannes A. Schaar, Rob Krams, Luc C.A. van Damme, Patrick W. Serruys, Dennie Tempel, Antonius F.W. van der Steen
Publikováno v:
Investigative Radiology, 41(8), 631-638. Lippincott Williams & Wilkins
We sought to investigate feasibility of vasa vasorum imaging using the novel technique of contrast harmonic intravascular ultrasound.Prototype intravascular ultrasound (IVUS) instrumentation was developed for the sensitive detection of micro-bubble c
Autor:
R.A. Baldewsing, Frits Mastik, Antonius F.W. van der Steen, Johannes A. Schaar, Patrick W. Serruys
Publikováno v:
Ultrasound in Medicine and Biology, 32(2), 201-210. Elsevier Inc.
Rupture, with subsequent thrombosis, of thin-cap fibroatheromas (TCFAs) is a major cause of myocardial infarction. A TCFA has two main components: these are a large, soft lipid pool and a thin, stiff fibrous cap covering it. Quantification of their m
Publikováno v:
Revista Española de Cardiología. 58:1197-1206
La muerte subita y los sindromes coronarios agudos son, frecuentemente, manifestaciones iniciales de la cardiopatia isquemica. Estudios post mortem han indicado que la composicion de las placas ateromatosas es un factor determinante para la predispos
Autor:
Johannes A. Schaar, Patrick W. Serruys, Cornelis J. Slager, Frank J. H. Gijsen, Jolanda J. Wentzel, A C van der Wal, Attila Thury
Publikováno v:
Nature Clinical Practice Cardiovascular Medicine, 2(9), 456-464. Nature Publishing Group
American Heart Association type IV plaques consist of a lipid core covered by a fibrous cap, and develop at locations of eccentric low shear stress. Vascular remodelling initially preserves the lumen diameter while maintaining the low shear stress co
Publikováno v:
IEEE Transactions on Medical Imaging, 24(4), 514-528. Institute of Electrical and Electronics Engineers Inc.
IEEE Transactions on Medical Imaging, 24(4), 514-528. Institute of Electrical and Electronics Engineers
IEEE Transactions on Medical Imaging, 24(4), 514-528. Institute of Electrical and Electronics Engineers
Intravascular ultrasound (IVUS) elastography visualizes local radial strain of arteries in so-called elastograms to detect rupture-prone plaques. However, due to the unknown arterial stress distribution these elastograms cannot be directly interprete