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Supporting the TECAB grafting through CT based analysis of coronary arteries

: Wesarg, S.


Frangi, A.F.:
Functional imaging and modeling of the heart : Third international workshop, FIMH 2005, Barcelona, Spain, June 2-4, 2005. Proceedings
Berlin: Springer, 2005 (Lecture Notes in Computer Science 3504)
ISBN: 3-540-26161-3
ISSN: 0302-9743
International Workshop on Functional Imaging and Modeling of the Heart (FIMH) <3, 2005, Barcelona>
Fraunhofer IGD ()
Minimally Invasive Surgery; computed tomography; CT; cardiology; segmentation; medical imaging; image analysis

Calcified coronary arteries can cause severe cardiac problems and may provoke an infarction of the heart's wall. An established treatment method is the bypass operation. The usage of a telemanipulation system allows for the execution of that operation as a totally endoscopic coronary artery bypass (TECAB) grafting. This relatively new method narrows the surgeon's view and does not permit the palpation of the vessel in order to detect calcifications (hard plaques). A planning based on contrast enhanced, cardiac CT data sets can compensate for that problem. This work presents analysis methods for coronary arteries. Hard plaques are detected using a tracking-based vessel segmentation technique. In addition, the vessel's neighborhood is analyzed in order to decide whether it is surrounded by tissue or fat, or if it is freely accessible for the surgeon's instruments. Furthermore, well adapted methods for the visualization of these analysis results are presented.