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. Author manuscript; available in PMC: 2014 Nov 1.
Published in final edited form as: Int J Radiat Oncol Biol Phys. 2013 Nov 1;87(3):10.1016/j.ijrobp.2013.07.007. doi: 10.1016/j.ijrobp.2013.07.007

Figure 3.

Figure 3

Difference in 4D and 3D dose evaluation techniques for 95% of (a) PTV, (b) ITV, and (c) heterogeneity index versus tumor motion magnitude. The Δ(4D-3D) represents the 4D minus the 3D value for patient; positive values denote 4D indices increased from the 3D dose and negative values denote 4D indices decreased from the 3D dose. PSPT values are represented by red x and IMRT values are represented by a blue circle. Spearman’s rank correlation values of ρ are included when p-values were significant (p<0.05).