Fig. 2.

Target volume metrics in treatment plans using either 7 mm or 5 mm PTV margins. A) CTV V99%. B) PTV V95% C) PTV V99.9 % D) PTV D0.03 cc. Dose goals: green denotes that a priori goal is met, yellow denotes the goal is marginally met, and red denotes that the treatment plan has failed to meet the dose goal. Data from patient 10 (i.e. Patient selected for sub-analysis) is denoted with the square icon. Significance determined for parametric data using paired t-test and for non-parametric data Wilcoxon matched-pairs signed rank test; p < 0.05*, p < 0.001**, p < 0.0001***; n = 10. (For interpretation of the references to colour in this figure legend, the reader is referred to the web version of this article.)