Cerebral Circulation

Serial cerebral angiography has the advantage that the observation on cerebral circulation can be referred to each part of the brain. Eighty one patients including various lesions of the brain were examined by means of AOT biplane seriography and Cisal auto-injector. Ten ml 60% Urografin was injected with 3.5 kg/cm^2 pressure through the needle punctured into the common carotid. Program of films was set at the beginning of the injection and by each 1/2 second until 1.5 sec. after the injection, then by each one second to 7.5 sec.： so totally ten exposures for each direction. All patients were examined under the control of general anesthesia with GOF, GOP or gamma-hydroxybutylate, the former two being inhalated through an intratracheal intubation, while the latter intravenously administrated. The circulation of opaque media was followed in detail and plotted upon Gilroys schema. 1. In control cases which all seemed to suffer from little organic change so far as they were examined in the neurological clinic (e.g., epilepsy, GOTS etc.), the cerebral circulation has a pattern as shown in the figure. This pattern of cerebral circulation can be regarded as the normal or average, particularly if patterns of other groups were compaired with this. 2. Some of the posttraumatic patients have a slight prolongation only in venous circulation.