CT has become the single sufficient and necessary radiographic test in the evaluation of patient with cranial trauma_ Recognition of the classic patterns and variations of traumatic CT abnormalities is chal lenging and rewarding aspects in head trauma. In retrospective analysis of CT findings of 532 patients with head trauma, a wide spectrum of traumatic abnormalities were demonstrated : skull fracture, subgaleal hematoma, pneumocephalus, cerebral edema, cerebral contusion, epidural hematoma, subdural hematoma, subarachnoid hemorrhage, intracerebral hematoma, intraventricular hematoma, brain infarction, hydrocephalus and porencephaly.