Extracranial--intracranial anastomosis.
D002545:Brain Ischemia / Q000601:surgery*; D002339:Carotid Arteries / Q000601:surgery*; D002340:Carotid Artery Diseases / Q000601:surgery; D002536:Cerebral Arteries / Q000601:surgery*; D002560:Cerebrovascular Circulation; D003097:Collateral Circulation; D006801:Humans; D002546:Ischemic Attack, Transient / Q000601:surgery