TY - JOUR T1 - Cerebral Hemodynamic Benefits after Contralateral Carotid Artery Stenting in Patients with Internal Carotid Artery Occlusion JF - American Journal of Neuroradiology JO - Am. J. Neuroradiol. SP - 616 LP - 621 DO - 10.3174/ajnr.A3250 VL - 34 IS - 3 AU - F. Oka AU - H. Ishihara AU - S. Kato AU - M. Higashi AU - M. Suzuki Y1 - 2013/03/01 UR - http://www.ajnr.org/content/34/3/616.abstract N2 - SUMMARY: CEA contralateral to an ICA occlusion is considered a surgical risk, and CAS may be an alternative for these patients. Our goal was to examine whether CAS improves cerebral hemodynamics on the treated side and on the side of the ICA occlusion, on the basis of measurement of CBF and CVR by using SPECT. The subjects were 8 patients who underwent contralateral CAS. Resting CBF and CVR to acetazolamide were measured by using 123I-IMP SPECT before and chronically (3–6 months) after CAS. Resting CBF was also measured immediately (<2 hours) after CAS by using 123I-IMP SPECT. There were no significant differences in resting CBF in both hemispheres immediately after CAS. However, resting CBF and CVR both significantly increased in the chronic period in both hemispheres. Contralateral CAS in patients with ICA occlusion resulted in cerebral hemodynamic improvement on the treated side and on the side of ICA occlusion. CAScarotid artery stentingCEAcarotid endarterectomyCVRcerebrovascular reactivity123I-IMPiodine 123 N-isopropyl-p-iodoamphetaminePaCO2,partial pressure of carbon dioxide ER -