3DCRT

IMRT

VMAT

p values

Mean ± SD

Large Breast Volume

Contralateral Lung Max dose %

2 ± 0.81

15 ± 2.16

16.75 ± 7.08

· 0.046 (3D vs IMRT in favor of 3D)

Contralateral Breast mean dose %

0.20 ± 0.14

1.22 ± 0.51

3 ± 1.41

· 0.046 (3D vs IMRT in favor of 3D)

No Nodal Irradiation

Contralateral Breast mean dose %

0.28 ± 0.22

2.3 ± 1.71

2.76 ± 0.93

· 0.037 (3D vs IMRT vs VMAT)

· 0.02 (3D vs IMRT in favor of 3D)

· 0.013 (3D vs VMAT in favor of 3D)

Body Volume receiving 100% cc

1058.75 ± 698.91

911.75 ± 953.52

926.58 ± 725.50

· 0.031 (3D vs VMAT in favor of VMAT)

Homogeneity Index

0.19 ± 0.08

0.09 ± 0.03

0.15 ± 0.05

· 0.04 (3D vs IMRT vs VMAT)

· 0.046 (IMRT vs VMAT in favor of IMRT)

Boost Irradiation

Contralateral Lung Max dose %

5.96 ± 7.46

20.15 ± 12.15

18.91 ± 9.62

· 0.017 (3D vs IMRT in favor of 3D)

Contralateral Breast mean dose %

0.43 ± 0.2

1.95 ± 0.64

2.53 ± 0.51

· 0.006 (3D vs VMAT in favor of 3D)

Homogeneity Index

0.21 ± 0.12

0.08 ± 0.03

0.13 ± 0.07

· 0.01 (3D vs IMRT vs VMAT)

· 0.038 (IMRT vs VMAT in favor of IMRT))