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. 2013 Jul 31;86(1029):20130176. doi: 10.1259/bjr.20130176

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© 2013 The Authors. Published by the British Institute of Radiology

This is an Open Access article distributed under the terms of the Creative Commons Attribution-NonCommercial 3.0 Unported License (http://creativecommons.org/licenses/by-nc/3.0/), which permits unrestricted non-commercial use, distribution and reproduction in any medium, provided the original author and source are credited

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Figure 2. — Comparison of dose–volume histogram (DVH) variations for various normal structures and clinical target volume (CTV) between passive scattering proton beam (PSPB; blue band) and intensity-modulated proton radiotherapy (IMPT; red band) using (a) TANGENT_ENFACE and (b) TANGENT_PAIR owing to patient set-up uncertainties for one example patient. The shadowed band represents the DVH variation range, and the solid line represents the DVH from the original plan. brst skin, breast skin; ip. lung, ipsilateral lung; ip. norm. brst, ipsilateral normal breast.