Routine photographic subtraction.
D000792:Angiography; D001027:Aortography; D002533:Cerebral Angiography; D002551:Cerebral Ventricle Neoplasms / Q000000981:diagnostic imaging; D006801:Humans; D008579:Meningioma / Q000000981:diagnostic imaging; D010781:Photography; D013382:Subtraction Technique; D013679:Technology, Radiologic