Table 3 Dosimetric parameters of PTV and OARs for 10 cases of left breast cancer after breast-conserving surgery

 Coverage Index

97.02 ± 1.51

96.37 ± 1.52

0.65(− 0.24, 1.54)

0.133

 D_mean

46.99 ± 0.23

46.96 ± 0.18

0.03(− 0.15, 0.20)

0.726

 HI

1.06 ± 0.01

1.07 ± 0.01

− 0.01(− 0.01, 0)

0.024

 CI

0.66 ± 0.09

0.66 ± 0.10

0.01(− 0.01, 0.03)

0.460

 Coverage Index

95.64 ± 1.36

94.58 ± 0.69

1.06(0.18, 1.95)

0.024

 D_mean

43.43 ± 0.53

43.36 ± 0.66

0.07(−0.12, 0.26)

0.417

 HI

1.18 ± 0.02

1.19 ± 0.02

−0.01(− 0.01, 0)

0.045

 CI

0.76 ± 0.04

0.78 ± 0.04

−0.02(− 0.03, − 0.01)

0.001

 D_mean

29.88 ± 2.81

27.18 ± 2.68

2.70(2.34, 3.07)

0.000

 V₅

91.28 ± 4.40

88.60 ± 4.26

2.67(1.58,3.76)

0.000

 V₁₀

83.70 ± 6.45

82.34 ± 6.68

1.36(0.95, 1.77)

0.000

 V₂₀

77.31 ± 8.22

74.57 ± 8.25

2.73(2.12, 3.34)

0.000

 V₃₀

67.66 ± 7.70

57.09 ± 7.97

10.58(9.17, 11.99)

0.000

 V₄₀

19.91 ± 9.64

9.91 ± 5.84

10.00(6.64, 13.36)

0.000

 D_mean

7.82 ± 1.26

8.03 ± 1.23

−0.21(− 0.34, −0.08)

0.006

 V₅

34.86 ± 6.04

36.04 ± 5.29

−1.18(−2.33, − 0.03)

0.045

 V₁₀

25.27 ± 5.08

24.25 ± 4.76

−0.98(− 1.59, − 0.37)

0.005

 V₂₀

15.50 ± 3.49

15.97 ± 3.54

−0.47(− 0.76, − 0.18)

0.005

 V₃₀

9.36 ± 2.51

9.63 ± 2.54

−0.28(− 0.49, − 0.06)

0.019

 D_mean

0.54 ± 0.22

0.53 ± 0.21

0.01(−0.01, 0.03)

0.423

 V₅

0.02(0,0.38)

0.01(0,0.51)

−2.54(−8.22,3.13)

0.337

 V₁₅

0

0

−0.89(−2.90,1.12)

0.343

 D_mean

3.59 ± 1.58

3.61 ± 1.51

−0.03(− 0.19, 0.14)

0.718

 D_max

38.39 ± 8.06

38.15 ± 8.01

0.24(−0.34, 0.83)

0.371

 V₅

19.72 ± 13.36

21.67 ± 10.71

−1.93(−7.21,3.33)

0.426

 V₂₅

0.44(0.04,2.39)

0.50(0.04,2.32)

0.02(−0.09,0.13)

0.663

 D_mean

13.35 ± 7.63

13.66 ± 7.29

−0.32(−0.71, 0.07)

0.099

 D_max

25.64 ± 11.03

25.76 ± 10.42

−0.12(−1.17, 0.92)

0.795

 V₅

93.65(68.33,100)

93.05(64.42,100)

−2.30(−4.82,0.22)

0.069

 V₃₀

0(0,10.01)

0(0,10.52)

−0.05(− 0.41,0.32)

0.786

 V₄₀

0

0

0.763(−0.96,2.49)

0.343

 D_mean

4.91 ± 2.16

4.99 ± 2.12

−0.09(− 0.35, 0.18)

0.482

 V₅

33.08 ± 1172

33.82 ± 11.91

−0.75(−2.90,1.40)

0.451

 V₂₃

0.28(0.09,5.08)

0.35(0.09,3.88)

0.21(−0.16,0.58)

0.229

 D_mean

1.74 ± 1.09

1.70 ± 1.17

0.04(−0.06, 0.14)

0.410

 D_2%

5.21(3.84,10.36)

5.37(3.48,10.12)

−0.28(−1.43,0.87)

0.597

 V₅

3.74(0.52,9.16)

2.98(0.66,6.46)

0.72(−0.37,1.80)

0.17

 D_max

0.32 ± 0.06

0.31 ± 0.06

0.01(0,0.02)

0.121

 D_2%

0.29 ± 0.05

0.28 ± 0.05

0.01(0,0.02)

0.037