Studies of Cerebral Hemodynamics in Aortocranial Disease

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Abstract
AUTOPSY studies and the increasing use of arteriography have revealed an unsuspected frequency of occlusive disease of the aortocranial vessels as a cause of cerebral ischemia.1 2 3 4 5 On clinical grounds alone it has been practically impossible to differentiate intracerebral arterial insufficiency from stenosis or occlusion of the internal carotid or vertebral basilar system.6 The measurement of total cerebral blood flow and vascular resistance has not been considered to have clinical applicability because of the frequent lack of correlation with the functional status of the cerebrum.7 It is the purpose of this report to emphasize the fact that measurement of the cerebral . . .