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. 2016 Nov 7;8(1):91–100. doi: 10.1007/s13244-016-0529-y

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© The Author(s) 2016

Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

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Fig. 9 — A 21-year-old patient presenting sudden-onset aphasia. Initial (top row) and control (H24, bottom row) brain MRI with FLAIR (a, e), DWI (b, f), ASL (c, g) and SWI (d, h) sequences in the axial plane. Initial MRI, a and b No visible acute ischaemic zone. c Large area of hypoperfusion affecting the whole left hemisphere (parentheses) related to migraine aura. d Left hemispheric brush sign (white arrows). Control MRI (H24) shows no ischaemic lesion (e and f), a normal left hemispheric perfusion (g), and a disappearance of the brush sign (h)