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. 2023 Sep 29;19(2):2261167. doi: 10.1080/21645515.2023.2261167

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© 2023 The Author(s). Published with license by Taylor & Francis Group, LLC.

This is an Open Access article distributed under the terms of the Creative Commons Attribution-NonCommercial License (http://creativecommons.org/licenses/by-nc/4.0/), which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited. The terms on which this article has been published allow the posting of the Accepted Manuscript in a repository by the author(s) or with their consent.

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Figure 1. — Imaging findings. (a – c): on the 6th day after symptom onset, MRA of the head revealed narrowing of the left middle cerebral artery (c, arrow). Diffusion-weighted images (DWI) and fluid-attenuated inversion recovery (FLAIR) show no lesions. (d,e): on the 15th day after symptom onset, DWI and FLAIR show cortical high-intensity areas in the left cerebral hemisphere (arrow). (f,g): contrast-enhanced effects can be observed in the vessel walls of the left middle cerebral arteries, some of which are nodule-like or concentric (arrow). (h): MRA shows stenosis in the left internal carotid artery and left middle cerebral artery (arrow), and peripheral delineation is slightly poor on the affected side. (i – m): on the 157th day, after symptom onset abnormal findings are noted to have improved.