Two Cases of Fluid-Attenuated Inversion Recovery Hyperintense Vessels in Posterior Cerebral Artery
Hye Ihn Kim, MD, Kwon Duk Seo, MD and Kyung-Yul Lee, MD, PhD
Department of Neurology, Severance Institute for Vascular and Metabolic Research, Yonsei University College of Medicine, Seoul, Korea
ABSTRACT
Background: Hyperintense vessel sign (HVS) is frequently observed on fluid-attenuated inversion recovery (FLAIR) imaging in stroke patients. Stationary blood flow and slow retrograde circulation due to blood vessel occlusion is suggested as the mechanism. It is occasionally detected in the anterior circulation and relatively rarely in posterior cerebral artery (PCA). Case Report: We report two cases of PCA FLAIR HVS. FLAIR HVS was observed along the course of PCA distal to the occlusion site. Conclusions: FLAIR HVS can be observed in patients with PCA territory infarction and it can be used as an imaging marker of arterial occlusion.
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