Cerebral angiography during a modified Valsalva manoeuvre under general anesthesia.
D000768:Anesthesia, General; D001932:Brain Neoplasms / Q000000981:diagnostic imaging; D002533:Cerebral Angiography; D002560:Cerebrovascular Circulation; D006801:Humans; D012121:Respiration, Artificial; D014636:Valsalva Maneuver