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. 2020 Jan 9;93(1115):20190843. doi: 10.1259/bjr.20190843

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© 2020 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 4.0 Unported License http://creativecommons.org/licenses/by-nc/4.0/, which permits unrestricted non-commercial reuse, provided the original author and source are credited.

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Figure 2. — (a) Results of a simulation experiment which assumed that a randomly selected 50% of the tumor deaths in the control group (curve 1) had occurred earlier than usual by 200 days (curve 2). The sum of the two curves (curve 3) represents the expected temporal changes in the deceased fraction. (b) Expected survival curve (the gray curve) derived from the curve 3 in Fig 2a. The solid line represents the control group and the broken line represents the irradiated group. The maximum slope of the survival curve is shown by the short bold line sections.