Table 5: Average absolute volume (± 1σ) of normal tissue irradiated to at least 100% of the prescribed dose, VNormPI.

Group

m3 (cm3)

MLC-160 (cm3)

Δ( MLC_160 - m3) (cm3)

 

p-value

I

0.12 ± 0.06

0.16 ± 0.07

0.04

13.24 ± 7.93

< 0.001

II

1.15 ± 0.83

1.35 ± 0.95

0.20

5.89 ± 4.76

0.001

III

1.53 ± 1.12

1.90 ± 1.57

0.37

9.29 ± 12.28

0.004

IV

2.02 ± 1.72

2.85 ± 2.79

0.83

20.18 ± 16.93

< 0.001