Table 2 Average dose-volumetric parameters of primary plans

D_1% (Gy)

51.99 ± 0.36

51.71 ± 0.31

<0.001

Mean dose (Gy)

50.70 ± 0.22

50.50 ± 0.20

0.007

D_99% (Gy)

47.87 ± 0.36

47.94 ± 0.32

0.026

D_95% (Gy)

49.33 ± 0.08

49.30 ± 0.07

0.107

D_5% (Gy)

51.58 ± 0.33

51.32 ± 0.31

0.014

V_95% (%)

99.07 ± 0.36

99.15 ± 0.35

0.478

Conformity index

1.06 ± 0.05

1.04 ± 0.04

0.006

Homogeneity index

0.07 ± 0.01

0.06 ± 0.01

<0.001

Gradient measure (cm)

1.86 ± 0.18

2.01 ± 0.26

0.041

MU

532 ± 115

572 ± 117

0.294