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. 2021 Nov 12;9(11):e29241. doi: 10.2196/29241

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©Jordan McKenzie, Rasika Rajapakshe, Hua Shen, Shan Rajapakshe, Angela Lin. Originally published in JMIR Medical Informatics (https://medinform.jmir.org), 12.11.2021.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work, first published in JMIR Medical Informatics, is properly cited. The complete bibliographic information, a link to the original publication on https://medinform.jmir.org/, as well as this copyright and license information must be included.

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Color wash of the dose distribution on a radiation therapy planning computed tomography for a patient with lung cancer (left). The blue edge represents the 20 gray dose line, which is the recognized dose associated with increased risk of radiation pneumonitis. The same patient’s 3-month follow-up computed tomography image showed opacity indicating a partial filling of the air spaces in the lungs. These radiologic changes are representative of radiation pneumonitis in the radiation field (right).