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. 2021 Apr 9;11:7834. doi: 10.1038/s41598-021-87324-6

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© The Author(s) 2021

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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EVR and OR give different signals in MRI. (a) Drawing showing the extent of arterial occlusion in EVR dogs #1–3 as indicated. (b) X-ray images showing the stent inside the aorta of dog#1. (c) CTA image showing frontal (two left panels) and lateral (two right panels) views of EVR dog#3 before (baseline) and after (day 2) occlusion following EVR. Arrows point at segmental arteries before aortic stenting. (d) Sagittal T2-weighted MRI images: left, before OR surgery, showing no signal; right, after OR, showing abnormal signal centrally within the cord involving grey matter (arrowhead). (e) Sagittal T2-weighted MRI images of EVR dog#3: left, before EVR surgery, showing no signal; right, after EVR, showing abnormal signal within the posterior aspect of the cord at L3 involving white matter (arrowhead). (f), (g) Enlargements from right panels in (d) and (e), respectively.