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. 2019 May 23;20:101. doi: 10.1186/s12931-019-1049-3

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© The Author(s). 2019

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided 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 Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Fig. 3 — ROC curve over the range of the ESI model output for severe emphysema a and no emphysema b. Severe emphysema was defined at CT scan as %LAA_-950insp ≥ 14 by VIDA whereas no emphysema was defined at CT scan as %LAA_-950insp < 6 by VIDA. The total AUC area was of 0.88 for severe emphysema and 0.86 for no emphysema