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. 2021 Oct 14;11:722961. doi: 10.3389/fonc.2021.722961

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Copyright © 2021 Yang, Hu, Li, Ding, Wang, Pan, Kang, Kong, Du and Wang

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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The process of segmentation. (A) VOI contouring on an enhanced axial CT slice. (B) Three-dimensional image of esophageal cancer. VOI, volume of interest.