The successful application of corrective vascular surgical procedures to patients with cerebrovascular insufficiency has brought with it the need to localize the pathology.4This has resulted in the increased use of cerebral arteriography in this disease.5This has been with some reluctance, because of the emphasis placed upon the complications of this type of arteriography in the medical literature.1Our report is concerned with the experience at San Francisco Veterans Administration Hospital in the first 100 consecutive patients subjected to cerebral arteriography for the investigation of symptoms of cerebrovascular occlusive disease. The technique, complications, and findings of the examination are described to permit conclusions to be drawn as regards indications for arteriographic examination in this group of patients. Technique of Examination It is felt that many of the complications of arteriography are technical and avoidable. For this reason, details of examination are outlined for percutaneous carotid and