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. 2022 Mar 14;13:44. doi: 10.1186/s13244-022-01176-w

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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 — Neuroimaging features after COVID-19 vaccination. Case 1: A 46-year-old-man who presented with a rapid onset right-sided facial weakness after having COVID-19 vaccine. Axial T1 pre (a and c) and T1 postcontrast fat sat (b and d) demonstrate abnormal enhancement of the right facial nerve within the lateral right IAC (long yellow arrow in b) as well as asymmetric enhancement of the right geniculate ganglion (short yellow arrow in b) and tympanic portion of the facial nerve (yellow arrow in d). Findings are consistent with Bell's palsy. Case 2: A 51-year-old-man who presented with a sudden upper and lower limb weakness after having COVID-19 vaccine. Sagittal T1 postcontrast (e) T1 pre (f), STIR (g), and axial T2W (h) images demonstrate extensive T2 signal hyperintensity of the central cervical cord (red arrows) with patchy areas of enhancement at the levels of c1, c2, c3 and c4 (yellow arrows). There was no associated restricted diffusion. Findings were consistent with transverse myelitis