The impact of navigator timing parameters and navigator spatial resolution on 3D coronary magnetic resonance angiography
نویسندگان
چکیده
منابع مشابه
Model-free slice following using the cardiac fat navigator: enhanced gating efficiency for 3D SSFP coronary magnetic resonance angiography
INTRODUCTION Free-breathing coronary MRA (CMRA) typically uses a diaphragm navigator (NAV) for respiratory motion suppression, which is an indirect measure of the respiration-induced cardiac motion (1, 2). Slice tracking (3, 4) can be used to widen the acceptance window to improve navigator efficiency, but relies on a linear motion model to derive heart displacement. A linear correction factor ...
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The acquisition duration of most three-dimensional (3D) coronary magnetic resonance angiography (MRA) techniques is considerably prolonged, thereby precluding breathholding as a mechanism to suppress respiratory motion artifacts. Splitting the acquired 3D volume into multiple subvolumes or slabs serves to shorten individual breathhold duration. Still, problems associated with misregistration du...
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ژورنال
عنوان ژورنال: Journal of Magnetic Resonance Imaging
سال: 2001
ISSN: 1053-1807,1522-2586
DOI: 10.1002/jmri.1188