Table 2 Comparison of OAR sparing between 3DCRT and IMRT

Ipsilateral lens D_max

1.99 ± 1.00

2.67 ± 1.67

−1.938

0.068

Ipsilateral lens D_mean

1.52 ± 0.75

1.98 ± 1.45

−1.454

0.162

Contralateral lens D_max

1.71 ± 0.74

2.38 ± 1.97

−1.885

0.075

Contralateral lens D_mean

1.34 ± 0.55

1.84 ± 1.69

−1.585

0.129

Ipsilateral optic nerve D_max

12.54 ± 17.85

12.32 ± 13.38

0.156

0.877

Ipsilateral optic nerve D_mean

8.55 ± 11.99

8.57 ± 9.40

−0.014

0.989

Contralateral optic nerve D_max

7.55 ± 8.94

7.02 ± 7.68

1.025

0.318

Contralateral optic nerve D_mean

5.14 ± 5.92

4.59 ± 4.76

1.364

0.188

Optic chiasm D_max

12.53 ± 15.50

12.76 ± 13.53

−0.241

0.812

Optic chiasm D_mean

9.22 ± 11.64

8.28 ± 8.70

1.060

0.302

Brainstem D_max

14.78 ± 14.77

14.04 ± 11.62

0.523

0.607

Brainstem D_mean

7.09 ± 8.31

6.52 ± 6.99

0.711

0.486