Table 3 Average dose-volumetric parameters of boost plans

D_1% (Gy)

31.43 ± 0.24

31.26 ± 0.31

<0.001

Mean dose (Gy)

30.71 ± 0.17

30.57 ± 0.17

0.015

D_99% (Gy)

29.18 ± 0.10

29.25 ± 0.09

0.001

D_95% (Gy)

29.92 ± 0.05

29.89 ± 0.04

0.095

D_5% (Gy)

31.20 ± 0.22

31.02 ± 0.24

0.015

V_95% (%)

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

Gradient measure (cm)

1.66 ± 0.26

1.94 ± 0.47

0.027

MU

470 ± 59

495 ± 61

0.219