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. 2014 Aug 4;9(8):1117–1124. doi: 10.1111/ijs.12360

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© 2014 The Authors. International Journal of Stroke published by John Wiley & Sons Ltd on behalf of World Stroke Organization.

This is an open access article under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made.

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Fig. 2 — Examples of magnetic resonance imaging (MRI) inclusion and exclusion criteria. (a) A negative fluid-attenuated inversion recovery (FLAIR) pattern shows an acute ischemic lesion clearly visible on diffusion-weighted imaging (DWI), but no marked parenchymal hyperintensity visible on fluid-attenuated inversion recovery (FLAIR) corresponding to the DWI lesion (yellow circles). (b) A positive FLAIR pattern shows an acute ischemic lesion clearly visible on DWI and clear parenchymal hyperintensity on FLAIR corresponding to the acute DWI lesion (yellow circle).