Objective: Diffuse axonal injury (DAI) is also called diffuse alba injury, with the feature of wide-spread degeneration in the white matter of brain evoked by either the shear or tensile forces generated by the injury. DAI can occur itself or concomitantly with other head injury. It is considerded to be the most common cause of coma without haematoma, nervous functional impairment or vegetative state after traumatic brain injury. Therefore, DAI usually results in high handicap rate and high mortality...