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Friday December 11th,
2009
Location: Salle de Visscher, UCL Brussels
Time: 12:00
”Realistic Tool-Tissue Interaction Models for Surgical Simulation and Planning”
Abstract: Realistic
modeling of medical interventions involving tool-tissue interactions
has been considered to be a key requirement in the development of
high-fidelity simulators and planners. The soft-tissue constitutive
laws, organ geometry and boundary conditions imposed by the connective
tissues surrounding the organ, and the shape of the surgical tool
interacting with the organ are some of the factors that govern the
accuracy of medical intervention planning. First, I compare the
accuracy of linear and nonlinear constitutive laws for tissue using the
Poynting effect. Second, I consider the effects of organ geometry and
boundary constraints for prostate brachytherapy. Finally, I investigate
the effects of surgical tool shape on the accuracy of medical
intervention planning. I consider the specific case of robotic needle
steering, in which asymmetry of a bevel-tip needle results in the
needle naturally bending when it is inserted into softtissue.
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