Abstract
A method is presented for the repeated Summary measurement of cerebral blood-flow coupled with cerebral angiography during intracranial operations. The technique involves cannulation of the common carotid artery via the superficial temporal artery and intracarotid injection of a bolus of xenon- 133. The cerebral washout curve is detected by an external scintillation counter. Normally the initial slope index of mean cerebral blood-flow is calculated, but grey and white matter flows may also be obtained. The method is being applied in the direct surgery of cerebral-artery aneurysms, where the results assist in the management of the patient.
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