CMBE 2015 at Ecole Normale Superieure de Cachan (ENS Cachan) will feature minisymposia, invited speakers, and awards.

Ricardo Ortiz will present a paper at the conference.

A Hybrid Approach to Simulate Tissue Behavior During Surgical Simulation

By Venkata S. Arikatla, Ricardo Ortiz, Andinet Enquobahrie, David Thompson, Suvranu De, and Deanna Sasaki-Adams


Modeling interaction between deformable and rigid objects efficiently and accurately is one of the most important tasks for interactive surgical simulation. The Finite Element Method (FEM) has be-come very popular in this context due to its versatility in representing elastic bodies with irregular geometric features and diverse material properties. In this work we propose a hybrid FEM approach to simulating realistic tissue behavior that uses a non-linear formulation in the vicinity of the interac-tion while employing a less accurate and inexpensive linear formulation elsewhere. A semi-implicit time stepping is used for the non-linear portion of the domain. This avoids expensive domain de-composition strategies required to maintain consistency at the interface and allows for regular system assembly using a non-overlapping interface and single solver for both domains. This study demon-strates the advantages of our novel approach, especially for the case of real-time surgical simulation.

Physical Event