Ultrasonic Doppler studies after superficial temporal-middle cerebral artery anastomosis.
The ultrasonic Doppler technique was applied to evaluate the effect of STA-MCA anastomosis. Not only the STA itself, but also ophthalmic and major aortocranial arteries were recorded by the Doppler technique in 12 patients who had undergone STA-MCA anastomosis for internal carotid artery occlusion or stenosis. The examination was performed before, and within a month after the operation. The blood flow pattern of the STA, which had had an external carotid flow pattern, was altered to an internal carotid flow pattern by the STA-MCA bypass operation. The findings of Doppler sonograms of the STA were exactly consistent with post-operative angiograms and precisely represented the bypass patency. Among 7 patients with reverse flow direction in the ophthalmic artery before the operation, the reverse flow had decreased in 5 patients post-operatively. But no remarkable change in the ophthalmic artery was detected in the remaining 2 patients. The blood flow velocity patterns of major aortocranial arteries showed no change post-operatively.
D001783:Blood Flow Velocity; D002339:Carotid Arteries / Q000503:physiopathology; D002340:Carotid Artery Diseases / Q000601:surgery*; D002536:Cerebral Arteries / Q000601:surgery*; D002560:Cerebrovascular Circulation; D003251:Constriction, Pathologic; D004301:Doppler Effect; D006801:Humans; D008297:Male; D008875:Middle Aged; D009880:Ophthalmic Artery / Q000503:physiopathology; D011184:Postoperative Period; D011300:Preoperative Care; D012039:Regional Blood Flow; D012212:Rheology / Q000379:methods; D013699:Temporal Arteries / Q000503:physiopathology / Q000601:surgery*; D014463:Ultrasonography; D014711:Vertebral Artery / Q000503:physiopathology