A Stabilization Method of Blood Vessel Deformation for Surgical Simulators

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  • Mukai Nobuhiko
    Graduate School of Engineering, Musashi Institute of Technology
  • Abe Shingo
    Graduate School of Engineering, Musashi Institute of Technology
  • Kosugi Makoto
    Graduate School of Engineering, Musashi Institute of Technology

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  • 手術シミュレータ向け血管変形の安定化手法
  • シュジュツ シミュレータ ムケ ケッカン ヘンケイ ノ アンテイカ シュホウ

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Abstract

High performance of PC, computer graphics and virtual reality technology have enabled us to develop medical systems for surgery trainings. These systems require so fast calculation algorithms for real-time simulation that there should be some constraints for simulation models such as limitation of deformed area, pre-calculation of inverse matrices and reduction of control points. In some applications, however, deformed area cannot be limited and inverse matrices cannot be pre-calculated. Also, reduction of control points causes no inverse matrices due to zero determinants of stiffness matrices. Therefore, we propose a stabilization method of deformation for a neurosurgery simulator, which deforms blood vessels. This method requires the least control points and also always has non-zero determinants of stiffness matrices so that blood vessels can be stably deformed in real-time.

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