==== Front Radiat Oncol JRadiat Oncol JROJRadiation Oncology Journal2234-19002234-3164The Korean Society for Radiation Oncology 10.3857/roj.2018.00122.e1roj-2018-00122-e1ErratumCorrection: Intensity-modulated radiation therapy: a review with a physics perspective Cho Byungchul PhD Department of Radiation Oncology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea6 2018 29 6 2018 29 6 2018 36 2 171 171 Copyright © 2018 The Korean Society for Radiation Oncology2018This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited. ==== Body https://doi.org/10.3857/roj.2018.00122 Radiat Oncol J 2018;36(1):1-10 We noticed that the original version of this paper contains typographical errors. In Table 1, the year of study by Park et al. [23], ‘2002’, must be changed into ‘2001’. On page 6, line 11, ‘2002’ must be changed into ‘2001’.