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. 2025 Aug 30;15:31960. doi: 10.1038/s41598-025-17901-6

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© The Author(s) 2025

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. 3 — Thermal imaging showing a knee thermogram. Example of thermographic assessment (with white arrow showing the region of interest (ROI) manual segmentation) at the anterior aspect of the knee in a patient with rheumatoid arthritis. The readouts of the results of the minimum (T-min), maximum (T-max) and average (T-avg) temperatures were then obtained based on the manually segmented ROI of the thermogram.