ANGIOGRAM, ANGIOGRAPHY, ARTERIOGRAPHY, ARTERY, BACKGROUND, BLACK, BLOOD, BODY, BRAIN, CEREBRAL, CEREBROVASCULAR, CIRCLE, CIRCULATION, COLOURED, COMPUTED, CT, CTA, DIAGNOSIS, DIAGNOSTIC, FALSE-COLOURED, HEAD, HEALTHCARE, HUMAN, MEDICAL, MEDICINE, NO-ONE, NOBODY, OF, PROFILE, RADIOGRAPHY, samunella, SCAN, SIDE, SKULL, TOMOGRAPHY, VASCULATURE, VESSEL, VESSELS, VIEW, WILLIS, X-RAY,