Zhong H, Wachowiak M, Peters T. Enhanced pre-computed finite element models for surgical simulation. Stud Health Technol Inform. 2005;111:622-628

PMID: 15718810


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.

Author's contacts: tpeters@imaging.robarts.ca