Vertebral angiogram; Angiography - head; Carotid angiogram
Contrast dye flowing out of the blood vessel may be a sign of internal bleeding.
Narrowed arteries may suggest cholesterol deposits, a spasm, or inherited disorders.
Out of place blood vessels may be due to brain tumors, bleeding within the skull, aneurysm (bulging of the artery walls), or arteriovenous malformation.
Abnormal results may also be due to:
Koenigsberg RA, Bianco BA, Faro SH, Stickles S, Hershey BL, Siegal TL, et al. Neuroimaging. In: Goetz, CG, eds. Textbook of Clinical Neurology. 3rd ed. Philadelphia, Pa: Saunders Elsevier; 2007:chap 23.