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. 2020 Dec 3;26:120. doi: 10.1186/s10020-020-00248-1

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© The Author(s) 2020

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. 1 — MRI. a and b were T1WI and T2WI + fat-suppression coronal image in the control group; c and d were T1WI and T2WI + fat-suppressed coronal image at 2nd week after injection of hormone in the model group; e and f were T1WI and T2WI + fat-suppressed coronal image at 4th week after injection of hormone in the model group; g and h were T1WI and T2WI + fat-suppressed coronal image at 6th week after injection of hormone in the model group. (Red arrows indicated osteonecrosis low/high signal in T1WI and T2WI + fat suppression sequences)