Zobrazeno 1 - 10
of 59
pro vyhledávání: '"Kay Nehrke"'
Publikováno v:
NMR in Biomedicine
Multi-shot techniques offer improved resolution and signal-to-noise ratio for diffusion- weighted imaging, but make the acquisition vulnerable to shot-specific phase variations and inter-shot macroscopic motion. Several model-based reconstruction app
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::282ff2cc537b2e4e4907a17da0733dd3
https://hdl.handle.net/1887/121246
https://hdl.handle.net/1887/121246
Autor:
Oleh Dzyubachyk, Peter Koken, Maarten J. Versluis, Melissa T. Hooijmans, Kay Nehrke, Hermien E. Kan, Peter Börnert
Publikováno v:
Journal of Magnetic Resonance Imaging. 42:217-223
Purpose To show the effect, efficiency, and image quality improvements achievable by Dual Refocusing Echo Acquisition Mode (DREAM)-based shimming in whole-body magnetic resonance imaging (MRI) at 3T using the example of water/fat imaging. Materials a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::233f58e1820f402452b161af1ed52294
https://doi.org/10.1002/jmri.24775
https://doi.org/10.1002/jmri.24775
Autor:
Peter Vernickel, Kay Nehrke, Ulrich Katscher, Peter Börnert, Paul R. Harvey, Giel Mens, Ingmar Graesslin
Publikováno v:
Magnetic Resonance in Medicine. 74:589-598
Purpose The goal of this study is to increase patient safety in parallel transmission (pTx) MRI systems. A major concern in these systems is radiofrequency-induced tissue heating, which can be avoided by specific absorption rate (SAR) prediction and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3aae14bf4917f36de2ecda4f3ef28faa
https://doi.org/10.1002/mrm.25425
https://doi.org/10.1002/mrm.25425
Publikováno v:
Magnetic Resonance Materials in Physics, Biology and Medicine. 28:185-194
In the present study the performance of the dual refocusing echo acquisition mode (DREAM) B1 (+) mapping sequence is evaluated for RF shimming in the abdomen at 3 T and validated against existing RF shim technology.In vivo experiments were performed
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::21363c151edbb28734ccad3c0a9c98eb
https://doi.org/10.1007/s10334-014-0454-3
https://doi.org/10.1007/s10334-014-0454-3
Publikováno v:
NMR in Biomedicine
The objective of this work was to explore the origin of local B1+ perturbations in the ventricles measured at 7 T. The B1+ field in the human brain was mapped using four different MRI techniques: dual refocusing echo acquisition mode (DREAM), actual
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::74f42a0d78e5f842894f3240aa58cb21
https://doi.org/10.1002/nbm.3112
https://doi.org/10.1002/nbm.3112
Autor:
Alois M. Sprinkart, Wolfgang Block, Kay Nehrke, Winfried A. Willinek, Jürgen Gieseke, Georg Schmitz, Hans H. Schild, Frank Träber, Peter Börnert
Publikováno v:
Journal of Magnetic Resonance Imaging
Purpose To evaluate the use of the recently proposed ultrafast B1+ mapping approach DREAM (Dual Refocusing Echo Acquisition Mode) for a refinement of patient adaptive radiofrequency (RF) shimming. Materials and Methods Volumetric DREAM B1+ calibratio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8f41a88354bbce40dd10ed91643e31a8
https://doi.org/10.1002/jmri.24438
https://doi.org/10.1002/jmri.24438
Publikováno v:
Magnetic Resonance in Medicine. 71:246-256
Purpose To tailor and optimize the Dual Refocusing Echo Acquisition Mode (DREAM) approach for volumetric B1+ mapping of the brain at 7T. Theory and Methods A new DREAM echo timing scheme based on the virtual stimulated echo was derived to minimize po
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a167919fd0087b99fef5d5a2ae88e13a
https://doi.org/10.1002/mrm.24667
https://doi.org/10.1002/mrm.24667
Publikováno v:
Magnetic Resonance in Medicine. 71:156-163
Purpose To improve coronary vessel visualization in whole-heart coronary magnetic resonance angiography (CMRA), fat suppression is typically applied. However, recent studies have shown that cardiac fat can also have diagnostic value. To enhance CMRA
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::af2aceb39e70d93d101f8515202c38be
https://doi.org/10.1002/mrm.24648
https://doi.org/10.1002/mrm.24648
Autor:
Alexander E. Weber, Sebastian Hilbert, Cathleen Rogge, Ingo Paetsch, Sabrina Oebel, Cosima Jahnke, Gerhard Hindricks, Ricardo A. Spampinato, Sergio Richter, Kay Nehrke, Bernhard Schnackenburg, Peter Börnert
Publikováno v:
Europace : European pacing, arrhythmias, and cardiac electrophysiology : journal of the working groups on cardiac pacing, arrhythmias, and cardiac cellular electrophysiology of the European Society of Cardiology. 20(5)
Aims Cardiac magnetic resonance (CMR) imaging in patients with implanted cardiac devices is often limited by device-related imaging artefacts. Limitations can potentially be overcome by employing a broadband late gadolinium enhancement (LGE)-CMR imag
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c91a77ab5a9676862e7401322ff6304f
https://pubmed.ncbi.nlm.nih.gov/28431009
https://pubmed.ncbi.nlm.nih.gov/28431009
Autor:
Kay Nehrke, Peter Vernickel, Ingmar Graesslin, Johannes Achtzehn, Sascha Krueger, Steffen Weiss
Publikováno v:
Magnetic Resonance in Medicine. 70:1440-1449
Purpose The permanent presence of devices (pacemakers) inside a patient, or the need to use other devices (catheters), for diagnosis and treatment, usually represents a contraindication for a magnetic resonance examination. To help overcome this prob
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c85dbb76fd8e68da85c68d7bca2ec861
https://doi.org/10.1002/mrm.24558
https://doi.org/10.1002/mrm.24558