Comparison of Linear and nonlinear Models for Estimating Brain Deformation during Surgery Using Optimization Process
نویسندگان
چکیده
This paper presents finite element computation for brain deformation during craniotomy. The results are used to illustrate the comparison between two mechanical models: linear solid-mechanic model, and non linear finite element model. To this end, we use a test sphere as a model of the brain, tetrahedral finite element mesh, two models that describe the material property of the brain tissue, and function optimization that optimizes the model's parameters by minimizing distance between results deformation and supposed deformation. Both models assume finite deformation of the brain after opening the skull. We compare accuracy of the two models using error of the optimization process.
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