Abstract
We investigated cerebral blood flow (CBF), cerebrovascular reserve capacity (CVRC) and metabolism of vertebrobasilar occlusive disease by positron emission tomography (PET) to clarify the effectiveness of extracranial-intracranial bypass. The subjects were 4 patients undergoing superficial temporal artery (STA)-superior cerebellar artery (SCA) anastomosis. In the preoperative studies, reduction of CVRC was observed in the posterior and anterior circulation. The STA-SCA anastomosis procedure is effective in improving CBF and metabolism in patients with vertebrobasilar occlusive disease.
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