cerebral angiography image from fluoroscopy in intervention radiology showing cerebral artery

anatomy aneurysm angiogram angiography arch arteriography arteriole artery basilar blood brain carotid cerebral cerebrovascular circle clot contrast ct diagnosis disease fluoroscope fluoroscopic graft head headache hemorrhage hospital illness image imaging injury ischemia media medical medicine neurology neurosurgery occlusions patient scan skull stroke surgery system thrombosis treatment vascular vessel willies