Figure 9. Correlations between D0.01 cc and DeIIVs of GTV - 2 mm and GTV - 4 mm.

The scatter plots show the correlations between the GTV D_{0.01 cc} relative to the GTV D_{V-0.01 cc} and the GTV - 2 mm D_eIIV relative to the GTV D_{V-0.01 cc} (A); and the GTV - 2 mm D_eIIV relative to the GTV D_{V-0.01 cc} (B). The results of SRCC are added in A and B.

GTV: Gross tumor volume; GTV - X mm: Gross tumor volume evenly reduced by X mm; D_eIIV: A minimum dose to cover the irradiated isodose volume equivalent to a target volume on the dose-volume histogram; D_{0.01 cc}: A minimum dose covering 0.01 cc of a target volume as the near-maximum dose; D_{V-0.01 cc}: A minimum dose to cover a target volume minus 0.01 cc; SRCC: Spearman’s rank correlation coefficient