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. 2017 Apr 26;7:1172. doi: 10.1038/s41598-017-01178-5

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© The Author(s) 2017

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as 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. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Assessment of post-stroke BBB disruption via HARM on perfusion-weighted imaging. (A) Pre-contrast and (B) post-contrast FLAIR images from a patient presenting with HARM at 24 hour follow up. HARM was positively identified when the CSF space in the sulci or ventricles appeared hyperintense post-contrast. Level of HARM was systematically categorized as none, mild, moderate, or severe based on the number of serial slices exhibiting evidence of HARM.