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Time‐resolved 3D MR angiography of the abdomen with a real‐time system
Author(s) -
Wieben Oliver,
Grist Thomas M.,
Hany Thomas F.,
Thornton Frank J.,
Glaser John K.,
Skuldt Dean H.,
Block Walter F.
Publication year - 2004
Publication title -
magnetic resonance in medicine
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.696
H-Index - 225
eISSN - 1522-2594
pISSN - 0740-3194
DOI - 10.1002/mrm.20230
Subject(s) - diaphragm (acoustics) , contrast (vision) , coronal plane , medicine , temporal resolution , real time mri , angiography , sagittal plane , dynamic contrast , image resolution , nuclear medicine , radiology , magnetic resonance imaging , computer science , computer vision , physics , optics , acoustics , loudspeaker
Abstract This study reports on the implementation of a real‐time MR acquisition, reconstruction, and display system on standard hardware for 3D contrast‐enhanced MR abdominal angiography. The system allows for dynamic imaging of the contrast passage with good spatial resolution in a single breathhold. It is capable of synchronously acquiring and processing multiple coil data. Bolus arrival can be detected confidently from the display of MIP images from sagittal 3D slabs with moderate spatial resolution. Upon detection of the contrast agent, the patient is asked to hold their breath and a novel 3D acquisition is started for a coronal volume. Temporal imaging within the breathhold is achieved through applying a modified time‐resolved imaging of contrast kinetics (TRICKS) technique with elliptical centric view ordering. The technique displays contrast passage from the arterial phase through enhancement of the hepatic venous system. It also provides the ability to quantify motion of the diaphragm over a long breathhold. Magn Reson Med 52:921–926, 2004. © 2004 Wiley‐Liss, Inc.