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. 2015 Mar 6;48(1):63–70. doi: 10.4143/crt.2014.265

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Copyright © 2016 by the Korean Cancer Association

This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Fig. 1. — An axial view of isodose distributions at the target center for each of the four treatment plans and a single representative patient. (A) Two-field 3-dimensional conformal radiotherapy (2F-3DCRT). (B) Three-field intensity-modulated radiation therapy. (C) TomoHelical IMRT. (D) TomoHelical 3DCRT. Under 2F-3DCRT, the high-dose region that received the prescription dose was widely distributed over the carotid artery. Under the other three plans, the high-dose region did not include the carotid artery.