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Journal of Neurosonology 2017;9(1):24-26.
Published online November 30, 2017.
Disappearance of FLAIR Hyperintense Vessel Signs in a Patient with Progressive Middle Cerebral Artery Occlusion
Kyeongyeol Cheon1,2, Hanna Cho1,2, Sang Hyun Suh3, Kyung-Yul Lee1,2
1Department of Neurology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
2Severance Institute for Vascular and Metabolic Research, Yonsei University College of Medicine, Seoul, Korea
3Department of Radiology, Yonsei University College of Medicine, Seoul, Korea
진행성 중대뇌동맥 폐색 환자에서 액체감쇠역전 고강도 혈관신호의 소실
천경열1,2, 조한나1,2, 서상현3, 이경열1,2
1연세대학교 의과대학 강남세브란스병원 신경과
2세브란스 혈관대사연구소
3연세대학교 의과대학 강남세브란스병원 영상의학과
Correspondence:  Kyung-Yul Lee, Tel: +82-2-2019-3325, Fax: +82-2-3462-5904, 
Email: kylee@yuhs.ac
Received: 11 September 2017   • Accepted: 14 December 2017
Abstract
Hyperintense vessel (HV)s on fluid-attenuated inversion recovery (FLAIR) in acute ischemic stroke are thought to represent slow antegrade or retrograde leptomeningeal collateral flow. A 33-year-old female patient with aphasia showed acute infarction in the left middle cerebral artery territory with stenosis on brain magnetic resonance imaging (MRI). HVs on FLAIR were seen in middle cerebral artery territory. One year follow up MRI showed near occlusion of left middle cerebral artery and disappearance of FLAIR HVs. FLAIR HVs are dynamic imaging sign which correlates with the corresponding arterial flow status.
Key Words: Magnetic resonance imaging, Cerebral infarction


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