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. 2019 Mar 30;18:46–53. doi: 10.1016/j.ctro.2019.03.004

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© 2019 The Authors

This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).

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Fig. 4 — Sample case with intra-fraction expansion of the bladder due to increased filling. Visible are the 35 Gy dose level (red), the PTV (blue) and the actual location of the GTV (green) for the ATP plan on the online planning MRI (A) and the post-delivery MRI (B) and the ATS plan on the online planning MRI (C) and the post-delivery MRI (D). The GTV V_35Gy remained 100% for the clinically delivered (ATS) plan. For this particular case the increasing bladder filling and GTV shift resulted in a small reduction of GTV V_35Gy from 100% to 97.5% with the ATP plan. (For interpretation of the references to colour in this figure legend, the reader is referred to the web version of this article.)