Carotid-cavernous fistula. Demonstration of asymptomatic vascular "steal".
Abnormal distribution of cerebral vascular flow was studied in a patient who had a traumatic carotid-cavernous sinus fistula. Serial studies were performed using a method for determining relative cerebral vascular flow:99mtechnetium-diethylenetriamine pentaacetic acid (99mTc-DTPA) was injected intravenously and flow data were processed by a digital computer. Serial studies documented the occurrence of a vascular "steal" during temporary carotid occlusion; postoperative studies showed disappearance of the steal and obliteration of thiling arterial structures and capillary filling in the brain, and in demonstrating alteration in the cerebral circulation.
D000328:Adult; D001164:Arteriovenous Fistula / Q000000981:diagnostic imaging* / Q000601:surgery; D002340:Carotid Artery Diseases / Q000000981:diagnostic imaging* / Q000601:surgery; D002343:Carotid Artery, Internal; D002426:Cavernous Sinus; D002560:Cerebrovascular Circulation; D005260:Female; D006801:Humans; D011877:Radionuclide Imaging; D013667:Technetium
D013667:Technetium