DocumentCode :
2464711
Title :
Estimating epicardial dynamics from the motion of coronary high curvature segments and bifurcation point regions in cineangiography
Author :
Verreault, M. ; Meunier, J. ; Bertrand, M. ; Lespérance, J. ; Bourassa, M.G.
Author_Institution :
Montreal Univ., Que., Canada
fYear :
1993
fDate :
5-8 Sep 1993
Firstpage :
635
Lastpage :
638
Abstract :
Several years ago, Y. Kong et al. (Am. J. Cardiology, vol. 27, p. 529-37, 1971) have shown that the motion of coronary bifurcations closely follows the underlying epicardial motion and therefore could be clinically used as landmarks to study cardiac contraction abnormalities. Here the authors introduce a method that uses single plane cineangiograms to compute this motion, by tracking landmark segments such as bifurcations and high curvature regions. For each pair of successive frames in the sequence, optical flow is used to provide a first estimate of the segment displacement; this is then refined through a local crosscorrelation. The segment position is then updated and the process is repeated for the next image pair in the sequence. This provides sets of translation vectors, i.e. motion fields, which are used to infer the local biaxial contraction patterns. Validation is conducted through a computer model of coronary tree in motion. Results on clinical data are also presented
Keywords :
angiocardiography; biomechanics; medical image processing; bifurcation point regions; cardiac biomechanics; cineangiography; clinical data; clinically useful landmarks; computer model; coronary high curvature segments motion; coronary tree motion; epicardial dynamics estimation; high curvature regions; image pair; local crosscorrelation; medical diagnostic imaging; optical flow; translation vectors sets; Arteries; Bifurcation; Brightness; Equations; Image motion analysis; Image segmentation; Motion estimation; Optical devices; Pixel; Tracking;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Computers in Cardiology 1993, Proceedings.
Conference_Location :
London
Print_ISBN :
0-8186-5470-8
Type :
conf
DOI :
10.1109/CIC.1993.378322
Filename :
378322
Link To Document :
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