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Tool/tissues interaction modeling for transluminal angioplasty simulation

Abstract : In this paper, a simulation environment is describe for balloon dilation during transluminal angioplasty. It means simulating geometrical and physical data from the inflation of a balloon while integrating data from tissues analysis and parameters from virtual tool-tissues interactions. In this context, three main behaviors has been identified: soft tissues, crush completely under the effect of the balloon, calcified plaques, do not admit any deformation but could move in deformable structures and blood vessel wall and organs, try to find their original forms. A deformable soft tissue model is proposed, based on the Enhanced ChainMail method to take into account tissues deformation during dilatation. We improved the original ChainMail method with a “forbidden zone” step to facilitate tool/tissues interactions. The simulation was implemented using five key steps: 1) initialization of balloon parameters; 2) definition of the data structure; 3) dilatation of the balloon and displacement approximation; 4) final position estimation by an elastic relaxation; and 5) interpolation step for visualization. Preliminary results obtain from patient CT data are reported.
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Submitted on : Wednesday, November 14, 2007 - 12:31:56 PM
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Tanguy Le Fol, Pascal Haigron, Antoine Lucas. Tool/tissues interaction modeling for transluminal angioplasty simulation. 29th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, 2007. EMBS 2007., Aug 2007, Lyon, France. pp.1734-1737, ⟨10.1109/IEMBS.2007.4352645⟩. ⟨inserm-00187321⟩



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