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. 2020 Aug;9(8):5077–5086. doi: 10.21037/tcr.2020.02.55

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2020 Translational Cancer Research. All rights reserved.

Open Access Statement: This is an Open Access article distributed in accordance with the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International License (CC BY-NC-ND 4.0), which permits the non-commercial replication and distribution of the article with the strict proviso that no changes or edits are made and the original work is properly cited (including links to both the formal publication through the relevant DOI and the license). See: https://creativecommons.org/licenses/by-nc-nd/4.0/.

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The differences in dose distribution between three-dimensional conformal radiation (3D-CRT) (A) and stereotactic body radiation therapy (SBRT) (B) for the same left lung metastasis near the hilum of an esophageal cancer patient. (A) Using 3D-CRT shows a belt-shaped irradiation area including a part of extra-tumoral left lung whereas (B) SBRT can make an almost tumor-shaped dose distribution which enables high dose coverage of tumor lesion and reduction of unnecessary irradiation of normal organs at the same time. (C) The overview of irradiation beams of SBRT.