Matthias Teschner

Ph.D., National Biocomputation Center, Stanford University

 

“Direct Computation of Nonlinear Soft-Tissue Deformation in Craniofacial Surgery Simulation”

An optimization approach for computing nonlinear soft-tissue deformation due to external forces is introduced. Deformation techniques based on mass-spring models commonly simulate the dynamic behavior of the system due to external forces. In  contrast to these methods the introduced static approach directly estimates the resulting stable equilibrium employing an optimization method. The optimization approach is robust and very efficient with regard to computational costs.

Software Demonstration:

The approach to soft-tissue deformation is part of an integrated system for craniofacial surgery simulation. The system is based on a patient's bone model and a photo realistic surface scan of a patient's face. The system can be used to simulate bone cutting and bone realigning with interactive collision detection. It predicts the resulting soft-tissue changes.