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. 2022 Apr 25;13:830705. doi: 10.3389/fneur.2022.830705

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Copyright © 2022 Hu, He, Zheng, Huang, Lv, Liao, Chen, Jiang, Wang, Wang, Lei, Liao, Sang, Liu, Luo, Sun, Yang, Huang, Song, Li, Zi, Long 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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Representative cases. (A) A 62-year-old man presented acute onset of slurred speech and progressed to loss of consciousness. The basilar artery appears hyperdense on nonenhanced CT. (B) A 71-year-old man presented acute onset of dizziness and slurred speech. The basilar artery did not appear hyperdense on nonenhanced CT.