title: Soft tissue deformation simulation in virtual surgery using nonlinear finite element method.
abstract: 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.
authors.affiliation: Image Guided Surgery Lab, Shanghai Jiao Tong University, China.
authors.forename: Zhennan
authors.initials: Z
authors.lastname: Yan
authors.forename: Lixu
authors.initials: L
authors.lastname: Gu
authors.forename: Pengfei
authors.initials: P
authors.lastname: Huang
authors.forename: Sizhe
authors.initials: S
authors.lastname: Lv
authors.forename: Xiao
authors.initials: X
authors.lastname: Yu
authors.forename: Xianming
authors.initials: X
authors.lastname: Kong
mesh_terms: 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