Now a day, hypertension is more increasing infrequency and ranked the top of the causes of death in Korea andother nations. Most cerebrovascular accidents in hypertensive patients are composed of vascular occlusive changesand hemorrhages. In cerebral angiogram, we can only detect occlusion of large artery and large mass effect fromhematoma or cerebral infarction without identification of its entity. The computed tomogram, however, is the bestway for evaluation of cerebrovascular disease including detection of nature, location, amount, and associatedchanges. This study includes evaluation of computed tomograms of 106 patients with hypertension during the periodof 17 months from Feb. 1979 to June 1980 in the department of radiology, college of medicine, Hanyang University.The results were as follows. 1. Age distribution of the total 106 patients was broad ranging from 25 years to 76years. 67.0% of patients were over the age of 50. The male and female sex ration was 3:2. 2. 28 out of 106patients were normal and 78 patients revealed abnormal on CT findings; those were intracranial hemorrhage(35patients), cerebral infarction (32 patients) and brain atrophy(11 patients). 3. All of the intracranial hemorrhageexcept one were intracerebral hemorrhage; those were located in the cerebral hemisphere(19 patients), basalganglia(15 patients) and brain stem(1 patient). The except one case of intracranial hemorrhage was subduralhematoma. 7 patients of intraventricular hemorrhage and 1 patient of subarachnoid hemorrhage were combined withintracerebral hemorrhage. 2/3 of patients who had hemorrhage in cerbral hemisphere revealed lesions in theparietal and temporal lobes. 4. In cases of cerebral infarction, the cerebral hemisphere was most common site oflesion(20 cases ), and the next was basal ganglia(11 cases). Most of the infarcts in cerebal hemisphere werelocated in the parietal and temporal lobes. The left basal ganglia was more commonly involved than the right.After the contrast infusion, contrast enhancement was occurred in 6 cases of cerebral infarction. 5. In 11patients with brain atrophy, 5 cases revealed cortical atrophy and the remainder was central atrophy except onecase of mixed lesion. 6. Degree of increased blood pressure was correlated with CT findings; in cases with severehypertension, most of lesions on CT were intracranial hemorrhage. But in cases with borderline or mildhypertension, most of the findings on CT were normal or cerebral infarction. 7. In cases with hemiplegia orquardiplegia, most of hte CT findings were abnormal, especially intracranial hemorrhage. In patients with mildmotor weakness or hemiparesis, most of the findings on CT were normal or cerebral infarction.