Title :
A knowledge-based method for 3-D coronary imaging
Author :
Coppini, G. ; Cagnoni, S. ; Demi, M. ; L´Abbate, A. ; Marraccini, P. ; Valli, G.
Author_Institution :
CNR Inst. of Clinical Physiol., Pisa, Italy
Abstract :
A knowledge-based method for the 3-D reconstruction of coronary arteries using biplane angiography is described. The reconstruction problem was divided into two subproblems: (1) reconstruction of the tree skeleton and (2) reconstruction of the arterial cross section. Only the solution of the first subproblem is discussed here. Basically, the reconstruction of the tree skeleton was achieved by matching the projections of each vessel segment and subsequently backprojecting the coupled projections. As regards the matching phase, both imaging geometry and anatomical knowledge were used. In particular, owing to the allocation of epicardial vessels on a well-behaved ellipsoidlike surface, the projections of a given vessel segment must satisfy a set of geometrical conditions. These depend on the position of the vessel on the heart surface with respect to the X-ray sources. As for reconstruction of the coronary tree skeleton, an algorithm based on the imaging geometry, the bounding of the backprojection error, and a contiguity criterion was developed
Keywords :
cardiology; computerised picture processing; diagnostic radiography; medical diagnostic computing; X-ray sources; anatomical knowledge; arterial cross section reconstruction; backprojection error; biplane angiography; contiguity criterion; coupled projections backprojection; epicardial vessels; geometrical conditions; heart surface; imaging geometry; knowledge-based method; tree skeleton reconstruction; vessel segment projections; Angiography; Arteries; Geometry; Heart; Image reconstruction; Image segmentation; Skeleton; Surface reconstruction; Three dimensional displays; X-ray imaging;
Conference_Titel :
Computers in Cardiology 1989, Proceedings.
Conference_Location :
Jerusalem
Print_ISBN :
0-8186-2114-1
DOI :
10.1109/CIC.1989.130510