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. 2019 Feb 4;18:1533033818824367. doi: 10.1177/1533033818824367

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© The Author(s) 2019

This article is distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 License (http://www.creativecommons.org/licenses/by-nc/4.0/) which permits non-commercial use, reproduction and distribution of the work without further permission provided the original work is attributed as specified on the SAGE and Open Access pages (https://us.sagepub.com/en-us/nam/open-access-at-sage).

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Figure 1. — Isodose distributions for patient 1 with cT3N0 lower rectal cancer. The pink and slate blue lines represent PGTV and PTV, respectively. The green, light blue, sky blue, yellow, and sea green lines represent 58.75, 50, 40, 30, and 20 Gy isodoses, respectively. PGTV indicates planning gross target volume; PTV, planning target volume.