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. 2022 Oct 19;12:17423. doi: 10.1038/s41598-022-21475-y

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© The Author(s) 2022

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 licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence 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 licence, visit http://creativecommons.org/licenses/by/4.0/.

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Acute PNIF on Brain CT in three exemplary cases. (a) Case 1. Lobar hemorrhage in the left hemisphere and global subarachnoid hemorrhage with secondary intraventricular hemorrhage. (b) Case 8. Multiple, presumably embolic, infarcts in multiple cerebral circulations (left MCA, right ACA, PCA bilateral, cerebellum). (c) Case 12. Intracranial hemorrhage after multiple infarcts (PCA bilateral, brainstem and cerebellum). CT angiography was not performed in this fatal case but the underlying cause was assumed to be basilar artery occlusion.