Modeling of Brain Shift Phenomenon for Different Craniotomies and Solid Models
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Valencia Musalem, Álvaro
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Modeling of Brain Shift Phenomenon for Different Craniotomies and Solid Models
Abstract
This study investigates the effects of different solid models on predictions of brain shift for three craniotomies. We created a generic 3D brain model based on healthy human brain and modeled the brain parenchyma as single continuum and constrained by a practically rigid skull. We have used elastic model, hyperelastic 1st, 2nd, and 3rd Ogden models, and hyperelastic Mooney-Rivlin with 2- and 5-parameter models. A pressure on the brain surface at craniotomy region was applied to load the model. The models were solved with the finite elements package ANSYS. The predictions on stress and displacements were compared for three different craniotomies. The difference between the predictions of elastic solid model and a hyperelastic Ogden solid model of maximum brain displacement and maximum effective stress is relevant.
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Artículo de publicación ISI
Patrocinador
FONDECYT
1070148
1110008
1111012
FONDEF
D01I1035
CONICYT, Chile
PFB03 2007 CMM
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JOURNAL OF APPLIED MATHEMATICS Article Number: 409127 Published: 2012
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