title: Enhanced pre-computed finite element models for surgical simulation.
abstract: Soft tissue modeling is an important component in effective surgical simulation systems. A pre-computed finite element method based on elastic models is well suited to modeling soft tissue deformation. This paper addresses two principal issues: the flexibility of the pre-computed FE method and the approximation approach to non-linear elastic models. We describe a dynamic mechanism of the reconfiguration of the contacted nodes and the fixed boundary, without re-computing the inverse of the global stiffness matrix. The flexibility of the pre-computed models is described for both linear and non-linear elastic models.
authors.affiliation: Robarts Research Institute, London, Canada. {hzhong,mwach,tpeters}@imaging.robarts.ca
authors.forename: Hualiang
authors.initials: H
authors.lastname: Zhong
authors.forename: Mark P
authors.initials: MP
authors.lastname: Wachowiak
authors.forename: Terry M
authors.initials: TM
authors.lastname: Peters
mesh_terms: D002170:Canada; D003198:Computer Simulation; D003238:Connective Tissue / Q000601:surgery; D004548:Elasticity; D020342:Finite Element Analysis; D006801:Humans; D013514:Surgical Procedures, Operative