Physical Modeling of Vascular Tissues and Stress Analysis Optimization Based on Real Soft Tissue Characteristics

Abstract

We investigate a vascular deformation modeling method that can be used for percutaneous vascular interventional virtual surgery simulation. Triangle meshes are used to construct the virtual vascular tissues. The physical parameters of the meshes are obtained through biomechanics experiments with real porcine vascular under the small deformation. A new method is then proposed to establish the relation between the vascular elasticity modulus E and spring coefficient k for improving modeling accuracy. In addition, the influence scope analysis method for mass particle force optimization is used to improve simulation speed of tissue deformation. The propose method is compared with the finite element simulation, which shows that the proposed method is able to achieve the real time simulation for the virtual operations with a higher simulation accuracy.