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. 2015 Feb 11;56(3):546–552. doi: 10.1093/jrr/rru127

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© The Author 2015. 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. 7. — DIR-based or simple rectal D_x_cm³ values for each patient (x = 2, 1 or 0.1): (A) D_2cm³, (B) D_1cm³, (C) D_0.1cm³. A triangles and squares expressed simple D_x_cm³ and DIR-based D_x_cm³. These results showed that the simple addition method tended to overestimate rectal D_x_cm³ compared with the DIR-based method. Abbreviations: DIR = deformable image registration.