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. 2022 Aug 29;12:974728. doi: 10.3389/fonc.2022.974728

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Copyright © 2022 Kusano, Katoh, Minohara, Fujii, Miyasaka, Takayama, Imura, Kusunoki, Miyakawa, Kamada, Serizawa, Takakusagi, Mizoguchi, Tsuchida and Yoshida

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Evaluation results for variations in clinical target volume (CTV) coverage (ΔTC_CTV) and homogeneity index (ΔHI). (A) ΔTC_CTV and (B) ΔHI values from the initial plan. For each gantry angle, the median, first quartile, third quartile, maximum and minimum values, and outliers for ΔTC_CTV and ΔHI are presented in a box-and-whisker plot. These results were corrected for changes in factors other than gastrointestinal gas. Statistical analyses were then performed using the Friedman test. The symbol * indicate that there is a significant difference between them.