title: Patency and flow velocity profiles in the internal carotid artery assessed by digital subtraction angiography and Doppler studies three months following endarterectomy.
abstract: Pulsed Doppler spectral analysis and intravenous digital subtraction angiography have been carried out in 55 patients, three months after a total of 60 carotid endarterectomies. Five patients were operated on both sides and there were no re-operations. There were no re-stenoses and only one of the 60 internal carotid arteries was occluded. Spectral spreading of of the Doppler signal at the site of the endarterectomy was found in 52% of the internal carotid arteries, whereas wall irregularities were demonstrated in 25% by intravenous digital subtraction angiography. A stenosis or occlusion was found in 11 (18%) of the 60 ipsilateral external carotid arteries.
mesh_terms: D002340:Carotid Artery Diseases / Q000601:surgery*; D002343:Carotid Artery, Internal / Q000000981:diagnostic imaging / Q000601:surgery*; D002533:Cerebral Angiography; D002544:Cerebral Infarction / Q000601:surgery; D003251:Constriction, Pathologic / Q000175:diagnosis / Q000601:surgery; D004691:Endarterectomy; D006801:Humans; D002546:Ischemic Attack, Transient / Q000601:surgery; D011183:Postoperative Complications / Q000175:diagnosis*; D012212:Rheology; D013382:Subtraction Technique