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. 2019 Mar 14;9:4429. doi: 10.1038/s41598-019-40831-z

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© The Author(s) 2019

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 license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license 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 license, visit http://creativecommons.org/licenses/by/4.0/.

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Calibration curves of the radiomics nomograms generated from the primary (a) and validation cohorts (b). The goodness of fits of predicted probability from radiomics nomograms with the actual outcomes of the ALN metastasis was assessed. The y-axis represents the actual rate of ALN metastasis while the x-axis represents the calculated probability of ALN metastasis. The dashed lines represent the actual diagnosis and the solid line represents the performance of the radiomics nomogram without removed the bias.