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Three dimensional photoelastic stress analysis on patient-tailored anatomical model of cerebral artery

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5 Author(s)
S. Ikeda ; Dept. of Micro-Nano Syst. Eng., Nagoya Inst. of Technol., Japan ; F. Arai ; T. Fukuda ; K. Irie
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In this paper, we propose an in vitro patient-tailored biological model of human cerebral artery, a novel hardware platform for simulating endovascular intervention, in purpose of diagnosis, presurgical simulation and medical training. Proposed biological model precisely reproduces 3-dimensional configuration of vasculature lumen within vasculature-like thin uniform membrane made of silicon elastomer that provides material property closest to arterial tissue (as to elasticity and surface friction). With this patient-tailored precise vasculature model, then we propose a novel technique to visualize and to analyze 3-dimensional stress distribution over 3-dimensional membranous vasculature structure, which arise from surgical treatments or pulsatile blood streaming, using photoelastic stress analysis. Although photoelastic analysis is generally effective only for 2-dimensional problems, we adapted it to our 3-dimensional problem by making use of vasculature-like thin membranous configuration of proposed biological model. Stress distribution is dearly observed at its fringe as rainbow-colored photoelastic stress pattern. Consequently, proposed patient-tailored biological model should be useful for a wide range of applications, such as hemodynamic study and evaluation of medical devices, as well as surgical simulations.

Published in:

Micro-Nanomechatronics and Human Science, 2004 and The Fourth Symposium Micro-Nanomechatronics for Information-Based Society, 2004. Proceedings of the 2004 International Symposium on

Date of Conference:

31 Oct.-3 Nov. 2004