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. Author manuscript; available in PMC: 2020 Aug 19.
Published in final edited form as: Int J Radiat Oncol Biol Phys. 2017 Dec 15;100(4):1057–1066. doi: 10.1016/j.ijrobp.2017.12.013

Fig. 3.

Fig. 3.

Illustration of dose–volume histogram differences when using segmented planning target volume (PTV) definitions, where the high-dose PTV (PTV_High, red curve) is not included as part of a lower dose PTV (PTV_Low, blue curve) compared with a nonsegmented approach, where the high-dose PTV is included in the lower dose PTV (PTV_Low, green curve). In this example, the volume of PTV_High is 55% of the volume of the nonsegmented PTV_Low.