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Journal of Neurosonology 2017;9(1):21-23.
Published online November 30, 2017.
Bilateral Middle Cerebral Artery FLAIR Hyperintense Vessel Signs in a Patient with Progressive Arterial Occlusion
So Hoon Yoon, MD, Ji Hwa Kim, MD, Kyeongyeol Cheon, MD, Kyung-Yul Lee, MD, PhD
Department of Neurology, Gangnam Severance Hospital and Severance Institute for Vascular and Metabolic Research, Yonsei University College of Medicine, Seoul, Korea
진행되는 동맥폐색 환자에서 관찰된 양측 중간대뇌동맥 액체감쇠역전 고강도 혈관 신호
윤소훈, 김지화, 천경열, 이경열
연세대학교 의과대학 강남세브란스병원 신경과, 세브란스 혈관대사연구소
Correspondence:  Kyung-Yul Lee, MD, PhD, Tel: +82-2-2019-3325, Fax: +82-2-3462-5904, 
Email: KYLEE@yuhs.ac
Received: 26 May 2017   • Accepted: 26 July 2017
Abstract
Fluid-attenuated inversion recovery (FLAIR) hyperintense vessel (HV) sign is usually seen in patients who has steno-occlusive lesion in intracranial artery, as it reflects the decreased arterial blood flow velocity. A 79-year old male patient, who had multiple cerebral infarctions, showed FLAIR HV signs on both middle cerebral artery territory without any steno- occlusive lesion in initial magnetic resonance angiography (MRA). However, follow-up MRA showed decreased bilateral middle cerebral artery branches and distal stenosis. In our case, bilateral FLAIR HV sign without steno-occlusive lesion might be used as a poor prognostic factor indicating progressive arterial occlusion.
Key Words: Stroke, Magnetic resonance angiography, Prognosis


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