Prior to the introduction of computed tomography, the clinical and radiological diagnosis of the intraventricular hemorrhage in living patients was difficult. C.T. scanning is an invaluable investigation providing the rapid and noninvasive diagnosis of intracerebal and intraventricular hemorrhage. It reliable demonstrates the presence and distribution of fresh blood within the ventricular system. C.T. is also useful as a surgical guidance and in the evaluation of fate of the hematoma by easily performable follow-up studies. We reviewed 31 cases of intraventricular hemorrhage in C.T. in the department of radiology of Ewha Womans University Hospital during the period from August, 1982 to August, 1983. The results were as follows : 1. The most patients were encountered in the 5th decade and the male to female ratio was 1.2 : 1. 2. Hyperternsion was the main cause of the intraventricular hemorrhage ; 18 out of 31 patients. Remaining 13 patients were caused by hypoxia, aneurysm, Moya Moya disease, coagulation defect, trauma and undetermined etiology. 3. 18 out of 31 patients showed hemorrhage in the lateral ventricles only and all ventricles in 10 patients. 4. 28 out of 31 patients showed associated with intracranial hematoma : Those were intracerebral hematomas in 16 patients, intracerebral hematoma with subarachnoid hemorrhe in 4 patients and extracerebral hematoma in 2 patients. 5. Outcome was assessed using the Glasgow scale. According to them, the total mortality rate was 54.8%, however, 32.3% of patients returned to normal or monor disability. Patients, who had hypertension and marked degree of hemorrhage in the ventricular systems had a poor outcome. Patients with only ventricular hemorrhage had better outcome than associated intracranial hematoma. 6. 16 out of 31 patients were treated by surgical methods and 15 out of 31 patients by conservative tracranial hematoma. 7. Conclusively, causes, degree of intraventricular hemorrhage and associated intraventricular hematoma play a important role in outcome. And surgical treatement was beneficial in only a small selective number of cases in intraventricular hemorrhage.