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. 2021 Aug 30;12:675083. doi: 10.3389/fneur.2021.675083

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Copyright © 2021 Zhang, Chu, Wang, Shi and Yang.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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High-resolution magnetic resonance imaging. Concentric enhancement in the left middle cerebral artery and anterior cerebral artery. Red circles suggest vessel wall enhancement.