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. 2019 Sep 30;9:983. doi: 10.3389/fonc.2019.00983

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Copyright © 2019 Kiser, Smith, Wang and Fuller.

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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This patient was reirradiated for a rectal adenocarcinoma recurrence on a hybrid magnetic resonance-guided linear accelerator. The planning image (top) is an electron density imputation based on the simulation MRI (bottom).