Soft Tissue Deformation Simulation in Virtual Surgery using Nonlinear Finite Element Method

Author

Zhennan Yan ; Lixu Gu ; Pengfei Huang ; Sizhe Lv ; Xiao Yu ; Xianming Kong

Author_Institution

Shanghai Jiao Tong Univ. (SJTU), Shanghai

fYear

2007

fDate

22-26 Aug. 2007

Firstpage

3642

Lastpage

3645

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.

Keywords

biological tissues; biomechanics; deformation; mesh generation; surgery; Delaunay criterion; linear elastic models; mass spring; meshing algorithm; nonlinear finite element method; nonlinear strain computation; soft tissue deformation; spatial hashing collision detection method; virtual surgery; Biological tissues; Capacitive sensors; Computational modeling; Computer simulation; Deformable models; Equations; Finite element methods; Medical simulation; Mesh generation; Surgery; Computer Simulation; Elasticity; Finite Element Analysis; Humans; Imaging, Three-Dimensional; Kidney; Models, Biological; Nephrectomy; Nonlinear Dynamics; Stress, Mechanical; Surgery, Computer-Assisted; User-Computer Interface;

fLanguage

English

Publisher

ieee

Conference_Titel

Engineering in Medicine and Biology Society, 2007. EMBS 2007. 29th Annual International Conference of the IEEE

Conference_Location

Lyon

ISSN

1557-170X

Print_ISBN

978-1-4244-0787-3

Type

conf

DOI

10.1109/IEMBS.2007.4353120

Filename

4353120