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Table 3 Average dose-volumetric parameters of boost plans

From: The effect of extremely narrow MLC leaf width on the plan quality of VMAT for prostate cancer

  Original plan Shifted plan p
Boost target volume
D1% (Gy) 31.43 ± 0.24 31.26 ± 0.31 <0.001
Mean dose (Gy) 30.71 ± 0.17 30.57 ± 0.17 0.015
D99% (Gy) 29.18 ± 0.10 29.25 ± 0.09 0.001
D95% (Gy) 29.92 ± 0.05 29.89 ± 0.04 0.095
D5% (Gy) 31.20 ± 0.22 31.02 ± 0.24 0.015
V95% (%) 99.24 ± 0.22 99.38 ± 0.21 0.039
Conformity index 1.02 ± 0.02 1.01 ± 0.02 <0.001
Homogeneity index 0.06 ± 0.01 0.05 ± 0.01 <0.001
Normal tissue
Gradient measure (cm) 1.66 ± 0.26 1.94 ± 0.47 0.027
Monitor Unit (MU)
MU 470 ± 59 495 ± 61 0.219
  1. Abbreviations: D n% Dose received by at least n% volume of the target volume, V n% the percent volume of a structure irradiated by at least n% of the prescription dose