Authors analysed the CT findings of 28 cerebral palsy patients at Pusan National University Hospital from January 1984 to December 1987 Volumes of hemisheres lateral ventricles and parenchywas were measured in patients who showed no remarkable abnormality on CT film and compared with those of normal control group. 1. Among the 28 cerebral palsy patients there were 6 cases of diffuse atrophy in CT findings and unilateral atrophy in 2 cases and encephalomalacia and diffuse white matter low density in 1 cases had no specific abnormal finding on CT. 2. Difference in volumes of brain parenchyme and lateral ventricles of each hemisphere was greater than that of control group. 3. The were more enlared lateral ventricles and prominent unilateral brain atrophy in 18 cases of cerebral palsy who showed abnormality on CT as compared with normal control group.