Abstract
To elucidate the mechanism of mild traumatic brain injury (MTBI), we developed a new FE model of the human brain including the brain central structure including the Corpus callosum, Fornix, Basal ganglion, and so on, which is supposed to be possible axonal injury locations for the MTBI. In the developed brain FE model, we reproduced the shape of each part and the connectivity in the brain central structure based on the anatomical texts. The number of elements of the brain FE model is about 60,000, and the time step is 0.357 micro seconds. The model was validated against displacements of some target points in the cerebral tissue during a head rotational impact. The displacements in the parts close to the central structure in the brain tissue predicted by the model showed good agreement with those obtained from cadaver test data. One of the injury locations predicted by using the maximum principal strain agreed well with one of locations of the MTBI reported by medical doctors. Therefore, the brain FE model proposed in this study has the potential for more accurate prediction of the MTBI.
