Modeling of Brain Shift Phenomenon for Different Craniotomies and Solid Models

Journal of Applied Mathematics (Impact Factor: 0.72). 02/2012; 2012(12). DOI: 10.1155/2012/409127
Source: DBLP


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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