支架
主动脉根
钙化
主动脉瓣
尺寸
医学
过程(计算)
房室瓣
放射科
心脏病学
计算机科学
生物医学工程
主动脉
艺术
心室
视觉艺术
操作系统
作者
Christoph Russ,Raoul Hopf,Sven Hirsch,Simon H. Sündermann,Volkmar Falk,Gábor Székely,Michael Gessat
标识
DOI:10.1109/embc.2013.6609599
摘要
Transcatheter aortic valve implantation (TAVI) is a minimally invasive off-pump procedure to replace diseased aortic heart valves. Known complications include paravalvular leaks, atrioventricular blocks, coronary obstruction and annular rupture. Careful procedure planning including appropriate stent selection and sizing are crucial. Few patient-specific geometric parameters, like annular diameters, annular perimeter and measurement of the distance to the coronary ostia, are currently used within this process. Biomechanical simulation allows the consideration of extracted anatomy and material parameters for the intervention, which may improve planning and execution phases. We present a simulation workflow using a fully segmented aortic root anatomy, which was extracted from pre-operative CT-scan data and apply individual material models and parameters to predict the procedure outcome. Our results indicate the high relevance of calcification location and size for intervention planning, which are not sufficiently considered at this time. Our analysis can further provide guidance for accurate, patient-specific device positioning and future adaptations to stent design.
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