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. 2022 Sep 23;52(10):1853–1862. doi: 10.1007/s00256-022-04188-1

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© The Author(s) 2022

Open AccessThis 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. 5 — A 44-year-old female patient with a large disk herniation (asterisk) depicted on MRI at the level L5/S1, resulting in compression of the left S1 nerve root (a, b). Since the patient had severe pain in the prone position, she was slightly turned to her right side for the CT procedure, so she could better tolerate the periradicular S1 nerve root infiltration (c, d). The S1 nerve root in the CT images is marked with an arrow