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. 2022 Oct 3;12:16498. doi: 10.1038/s41598-022-20395-1

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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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Qualitative comparison of the individual and combined echoes (8 signal averages). Shown are ranking scores assigned to individual echoes (1, 2, 3, 4, 5) and combined echoes (1–2, 1–3, 1–4, 1–5) and averaged across all participants (n = 10) and raters (n = 5). Echoes/echo combinations were ranked separately for spinal cord (SC) only, gray matter (GM) only and joint SC and GM segmentability. The analysis was performed in a representative slice at the lumbosacral enlargement (LSE) in blue and conus medullaris (CM) in red. Ranking score ranges from 1 (lowest score) to 9 (highest score). Error bars represent standard deviation across participants.