Abstract
408 Automatic ROI placing for selecting optimal data acquisition window for magnetic resonance coronary angiography
Highlights
Magnetic resonance coronary angiography (MRCA) has great potential for the diagnosis of coronary artery disease
Fifteen health volunteers were scanned on a 1.5 Tesla scanner (Toshiba Medical Systems Corporation, Japan)
A region of interest (ROI) including on the outer edge of the cross section of the coronary artery was manually depicted from the first phase of each subject
Summary
Magnetic resonance coronary angiography (MRCA) has great potential for the diagnosis of coronary artery disease. The quality and accuracy of coronary MR angiography varies from subject to subject. Reducing cardiac motion effects in coronary arteries requires quantitative information on the motion of the coronary arteries throughout the cardiac cycle. There is little quantitative information on rest period. A new automatic measurement of the cardiac rest period using an image based global cross-correlation of multi heart-phase cine-scans in comparison to visual assessment was developed. The method still requires substantial user interaction such as placing a region of interest (ROI). There exists several automated post-processing method without user interaction for the selection of the optimal data acquisition in MRCA, a user has to define a threshold value substantially
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