The cost of traumatic brain injury (TBI) for public health policies is undeniable today. Even patients who suffer from mild TBI may persist with cognitive symptoms weeks after the accident, Most of them show no lesion in computed tomography or conventional magnetic resonance imaging, but microstructural white matter abnormalities (diffuse axonal lesion) can be found in diffusion tensor imaging. The Symptom of TBI Symptoms vary greatly depending on the severity of the head injury, but may include any of the following: Vomiting Lethargy Headache Confusion Paralysis Coma Loss of consciousness Dilated pupils Vision changes (blurred vision or seeing double, not able to tolerate bright...