Dynamic CT perfusion to assess the effect of carotid revascularization in chronic cerebral ischemia.
We present the case of a female patient who was studied with dynamic contrast-enhanced CT perfusion before and after carotid revascularization. Before treatment, there was decreased perfusion in the ipsilateral insula, which was shown to be resolved on the scan obtained 1 day after treatment, indicating the technical success of the revascularization. In the ipsilateral basal ganglia, there was delayed contrast agent clearance from the tissue, which was attributed to vasodilation; after revascularization, there remained a subtle stenotic effect. The observed changes in the dynamic CT perfusion study suggest that this technique may be a useful tool in the evaluation of patients with asymmetrical cerebral blood flow.
Roberts
H C
HC
Department of Radiology, University of California, San Francisco 94143, USA.
Dillon
W P
WP
Smith
W S
WS
D000368:Aged; D001921:Brain / Q000098:blood supply; D002545:Brain Ischemia / Q000000981:diagnostic imaging / Q000601:surgery*; D002548:Cerebral Revascularization; D002908:Chronic Disease; D004292:Dominance, Cerebral / Q000502:physiology; D005260:Female; D006801:Humans; D011183:Postoperative Complications / Q000000981:diagnostic imaging*; D012039:Regional Blood Flow / Q000502:physiology; D014057:Tomography, X-Ray Computed; D016896:Treatment Outcome