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Preconditioner-Based Contact Response and Application to Cataract Surgery

Hadrien Courtecuisse 1 Jérémie Allard 1 Christian Duriez 1 Stéphane Cotin 1
1 SHACRA - Simulation in Healthcare using Computer Research Advances
LIFL - Laboratoire d'Informatique Fondamentale de Lille, Inria Lille - Nord Europe, Inria Nancy - Grand Est
Abstract : In this paper we introduce a new method to compute, in real-time, the physical behavior of several colliding soft-tissues in a surgical simulation. The numerical approach is based on finite element modeling and allows for a fast update of a large number of tetrahedral elements. The speed-up is obtained by the use of a specific preconditioner that is updated at low frequency. The preconditioning enables an optimized computation of both large deformations and precise contact response. Moreover, homogeneous and inhomogeneous tissues are simulated with the same accuracy. Finally, we illustrate our method in a simulation of one step in a cataract surgery procedure, which require to handle contacts with non homogeneous objects precisely.
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Submitted on : Thursday, April 5, 2012 - 2:41:30 PM
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Hadrien Courtecuisse, Jérémie Allard, Christian Duriez, Stéphane Cotin. Preconditioner-Based Contact Response and Application to Cataract Surgery. MICCAI - 14th International Conference on Medical Image Computing and Computer Assisted Intervention - 2011, Sep 2011, Toronto, Canada. pp.315-322, ⟨10.1007/978-3-642-23623-5_40⟩. ⟨hal-00685593⟩



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