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. 2015 Dec 29;10:263. doi: 10.1186/s13014-015-0569-3

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© Alfonso et al. 2015

Open Access This 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. 1 — Schematic representation of dose-volume histograms. a A DVH corresponding to a PTV and b an OAR or the RVR. The factors involved in the formulation of I _T, I _O and I _R are also indicated, see (1), (2) and (3) respectively