title: Imaging after direct and indirect extracranial-intracranial bypass surgery.
abstract: OBJECTIVE
  The purpose of this article is to describe the imaging features of different types of surgical cerebral revascularization techniques.
  
  
  CONCLUSIONS
  Surgical cerebral revascularization involves direct and indirect techniques. Direct revascularization entails anastomosing a branch of the external carotid artery to a cerebral artery. Indirect revascularization involves delivering an extracranial vascular supply in proximity to the surface of the brain. The results of these techniques have distinctive imaging features.
authors.affiliation: Department of Radiology, Massachusetts General Hospital, 55 Fruit St, Boston, MA 02114, USA. ginatd01@gmail.com
authors.forename: Daniel T
authors.initials: DT
authors.lastname: Ginat
authors.forename: Edward R
authors.initials: ER
authors.lastname: Smith
authors.forename: Richard L
authors.initials: RL
authors.lastname: Robertson
authors.forename: R Michael
authors.initials: RM
authors.lastname: Scott
authors.forename: Pamela W
authors.initials: PW
authors.lastname: Schaefer
mesh_terms: D002548:Cerebral Revascularization / Q000379:methods*; D002561:Cerebrovascular Disorders / Q000175:diagnosis* / Q000601:surgery*; D003952:Diagnostic Imaging; D006801:Humans; D011183:Postoperative Complications / Q000175:diagnosis