title: [The significance of subtraction in neuroradiology].
mesh_terms: D002533:Cerebral Angiography; D003097:Collateral Circulation; D004428:Ear Neoplasms / Q000000981:diagnostic imaging; D006801:Humans; D008722:Methods; D010236:Paraganglioma, Extra-Adrenal / Q000000981:diagnostic imaging; D011187:Posture
vernacular_title: Die Bedeutung der Subtraktion für die Neuroradiologie.