抄録
Even if brain injury was doubted in the diagnosis at the hospital as a social problem in the head damage by MRI or CT, workmen's accidents include what is not recognized and that people more than several times of the death toll by the traffic accident suffer from aftereffects when the views on the image are not seen. The number of the injured people and the death toll of the whole traffic accident of Japan have second most cyclists next to a car crew. In the case of the dead of the bicycle crew, the most frequently injured body region is the head. It is necessary to clarify dynamic behavior to evaluate the head damage. Therefore this study reproduces the behavior in the brain when the head was impacted using the finite element analysis in frequent bicycle accidents and inspects an evaluation of the cerebral damage and the damage reduction effect of the helmet for bicycles. The condition of a patient of the head damage is elucidated dynamically by this study and gives a head damage patient appropriate emergency measures in the clinical spot and can provide right information for the prevention of the secondary damage.
