High temporal and high spatial resolution MR angiography (4D-MRA)
نویسندگان
چکیده
منابع مشابه
Ferumoxytole-enhanced 4D MR angiography with retrospectively defined temporal resolution
Background In cardiovascular MRI applications, high spatial resolution is preferable for anatomical evaluation of vascular structures and high temporal resolution is desired in cardiac functional assessment. As a result, current CMR protocol usually includes repeated scans of the same anatomy with different resolution settings. To address this issue, we propose a technique that allows for retro...
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Compared to conventional contrastenhanced MR angiography (MRA), which provides a spatial high-resolution threedimensional (3D) MRA data set of the vascular target region, MRA with TWIST (time-resolved angiography with stochastic trajectories) with its high temporal resolution offers an additional dynamic component. It presents a broad range of advantages for all vascular diagnostic questions wh...
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PURPOSE We propose a compressed-sensing (CS) technique based on magnitude image subtraction for high spatial and temporal resolution dynamic contrast-enhanced MR angiography (CE-MRA). METHODS Our technique integrates the magnitude difference image into the CS reconstruction to promote subtraction sparsity. Fully sampled Cartesian 3D CE-MRA datasets from 6 volunteers were retrospectively under...
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Introduction: Endovascular treatment of descending thoracic and abdominal aortic dissection has emerged as an alternative to open surgery. In terms of endovascular aortic stent-graft placement planning, MRI appears to be particularly useful as it can provide a comprehensive preinterventional diagnostic evaluation of the vascular aortic morphology. However, standard MRA techniques provided no in...
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ژورنال
عنوان ژورنال: RöFo - Fortschritte auf dem Gebiet der Röntgenstrahlen und der bildgebenden Verfahren
سال: 2014
ISSN: 1438-9029,1438-9010
DOI: 10.1055/s-0034-1366661