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. 2018 Nov 21;60(1):142–149. doi: 10.1093/jrr/rry095

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© The Author(s) 2018. Published by Oxford University Press on behalf of The Japan Radiation Research Society and Japanese Society for Radiation Oncology.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited.

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Fig. 2. — The percentage of hospitals categorized according to the methods employed to ensure homogeneity in dose distribution. (a). Percentages of hospitals using the various initial strategies as their most popular first choice for achieving a homogeneous dose distribution. (b) Percentages of hospitals using the various alternative strategies for achieving a homogeneous dose distribution if the initial strategy did not provide satisfactory homogeneity. (c) Percentages of hospitals using the various initial strategies as their most popular first choice for achieving a homogeneous dose distribution, among hospitals that did not use an alternative approach. WF = wedge filter; FIF = field-in-field technique; IMRT = intensity-modulated radiotherapy.