Modeling of Brain Shift Phenomenon for Different Craniotomies and Solid Models
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...
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| Format: | Article |
| Language: | English |
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Wiley
2012-01-01
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| Series: | Journal of Applied Mathematics |
| Online Access: | http://dx.doi.org/10.1155/2012/409127 |
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| author | Alvaro Valencia Benjamin Blas Jaime H. Ortega |
| author_facet | Alvaro Valencia Benjamin Blas Jaime H. Ortega |
| author_sort | Alvaro Valencia |
| collection | DOAJ |
| description | 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. |
| format | Article |
| id | doaj-art-209663eed63d44e19f9a696ede8caa95 |
| institution | Kabale University |
| issn | 1110-757X 1687-0042 |
| language | English |
| publishDate | 2012-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Journal of Applied Mathematics |
| spelling | doaj-art-209663eed63d44e19f9a696ede8caa952025-02-03T01:09:29ZengWileyJournal of Applied Mathematics1110-757X1687-00422012-01-01201210.1155/2012/409127409127Modeling of Brain Shift Phenomenon for Different Craniotomies and Solid ModelsAlvaro Valencia0Benjamin Blas1Jaime H. Ortega2Department of Mechanical Engineering, Universidad de Chile, Beauchef 850, Santiago, ChileDepartment of Mechanical Engineering, Universidad de Chile, Beauchef 850, Santiago, ChileDepartment of Mathematical Engineering and Center for Mathematical Modeling, Universidad de Chile, Av. Blanco Encalada 2120, Santiago, ChileThis 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.http://dx.doi.org/10.1155/2012/409127 |
| spellingShingle | Alvaro Valencia Benjamin Blas Jaime H. Ortega Modeling of Brain Shift Phenomenon for Different Craniotomies and Solid Models Journal of Applied Mathematics |
| title | Modeling of Brain Shift Phenomenon for Different Craniotomies and Solid Models |
| title_full | Modeling of Brain Shift Phenomenon for Different Craniotomies and Solid Models |
| title_fullStr | Modeling of Brain Shift Phenomenon for Different Craniotomies and Solid Models |
| title_full_unstemmed | Modeling of Brain Shift Phenomenon for Different Craniotomies and Solid Models |
| title_short | Modeling of Brain Shift Phenomenon for Different Craniotomies and Solid Models |
| title_sort | modeling of brain shift phenomenon for different craniotomies and solid models |
| url | http://dx.doi.org/10.1155/2012/409127 |
| work_keys_str_mv | AT alvarovalencia modelingofbrainshiftphenomenonfordifferentcraniotomiesandsolidmodels AT benjaminblas modelingofbrainshiftphenomenonfordifferentcraniotomiesandsolidmodels AT jaimehortega modelingofbrainshiftphenomenonfordifferentcraniotomiesandsolidmodels |