Soft tissue deformation simulation in virtual surgery using nonlinear finite element method.
Simulation for soft tissue's realistic deformation is an important part in Virtual Surgery. For large global deformation of soft tissue, linear elastic models are inappropriate, such as Mass-Spring and linear Finite Element Method (FEM). In this paper we present a simulation for 3D soft tissue using nonlinear strain computation. To get a finer mesh for FEM, we consider meshing algorithm based on Improved Delaunay criterion. Besides, we would present Spatial Hashing Collision Detection method and some improvement for real-time computation.
Yan
Zhennan
Z
Image Guided Surgery Lab, Shanghai Jiao Tong University, China.
Gu
Lixu
L
Huang
Pengfei
P
Lv
Sizhe
S
Yu
Xiao
X
Kong
Xianming
X
D003198:Computer Simulation; D004548:Elasticity; D020342:Finite Element Analysis; D006801:Humans; D021621:Imaging, Three-Dimensional / Q000379:methods*; D007668:Kidney / Q000601:surgery*; D008954:Models, Biological; D009392:Nephrectomy / Q000193:education* / Q000379:methods*; D017711:Nonlinear Dynamics; D013314:Stress, Mechanical; D025321:Surgery, Computer-Assisted / Q000379:methods*; D014584:User-Computer Interface