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Combined connectivity and a gray-level morphological filter in magnetic resonance coronary angiography
H E Cline1, D R Thedens, C H Meyer
1GE Corporate Research and Development, Schenectady, New York 12309, USA. cline@crd.ge.com
Abstract:
A connectivity algorithm combined with a new gray-level morphological filter dramatically improves the segmentation of tortuous coronary arteries from 3D MRI. Small coronary arteries are segmented from the larger ventricles with a new filter. These blood vessels are segmented from the noise background with connectivity. Coronary angiograms were computed in nine datasets acquired on volunteers with 3D stack of spirals and contrast-enhanced navigator sequences by both a maximum intensity projection and surface rendering. Surface images provided depth information needed to distinguish branching arteries from crossing veins. Magn Reson Med 43:892-895, 2000.