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. 2017 Jun 6;16(6):956–963. doi: 10.1177/1533034617711519

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© The Author(s) 2017

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. — Example of in vivo electronic portal imaging device (EPID) dose calculation at isocenter depth (patient 1, postero-anterior [PA] field, fraction 2). A and B, Coronal, sagittal views of planning CT and field with the small bowel contoured in cyan. C, Single cine frame. D, Planned dose map. E, EPID-reconstructed dose at isocenter depth. F, Point-to-point dose difference map. G and H, Cross-plane and in-plane dose profiles (blue, planned; dashed red, EPID) as overlaid on D and E. I, 5%, 3 mm gamma evaluation.