title: Indications for extracranial to intracranial arterial bypass operation.
mesh_terms: D002340:Carotid Artery Diseases / Q000000981:diagnostic imaging / Q000601:surgery; D002343:Carotid Artery, Internal / Q000000981:diagnostic imaging / Q000601:surgery*; D002533:Cerebral Angiography; D002548:Cerebral Revascularization; D006801:Humans