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In this paper, we present a fast and robust collision detection algorithm for bifurcated stent graft simulation. The algorithm is designed for simulating bifurcations of Y-stents in blood vessels in CT-data. For stent simulation, we use the active contours method (ACM) which realizes internal and external forces acting on the stent. The internal forces are for the elastic and smoothing behavior of...
In this paper, we present a fast and robust algorithm for centerline extraction in blood vessels. The algorithm is suitable for catheter simulation in CT data of blood vessels. It creates an initial centerline based on two user-defined points (start- and endpoint). For curved vessel structures, this initial centerline is computed by Dijkstra's shortest path algorithm. For linear vessel structures,...
This paper presents two methods to measure aneurysms and stenosis, and introduces a method for visualizing models of tube- and Y-stents virtually placed into preoperative CT-data. The measurement algorithms obtain characteristic dimensions of a vessel disease used to select a proper stent. A physical simulation of the forces interacting between stent and vessel walls allows the prediction of the stent...
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