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. 2023 Jul 4;33(4):1115–1122. doi: 10.1007/s00062-023-01320-z

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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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Fig. 4 — The origin of the common pericallosal artery variant at the aneurysm neck is visualized on UHR-TOF (a, c, arrows) but not on conventional TOF (b, d) and 3D-DSA (e). The vessel origin is confirmed on 2D DSA (f, arrow). Lack of visualization in 3D DSA is due to wash out from the contralateral A1 segment