Realistic And Efficient Brain-Skull Interaction Model For Brain Shift Computation

In this paper we propose a very efficient contact implementation for modeling the brain-skull interaction. This contact algorithm is specially designed for our Dynamic Relaxation solution method for solving soft-tissue registration problems. It makes possible the use of complex biomechanical models which include different nonlinear materials, large deformations and contacts for image registration. The computational examples prove the accuracy and the computational efficiency of our methods. For a model having more than 50000 degrees of freedom, a complete simulation can be done in less than a minute on a standard personal computer.

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