Table 2 Dosimetric parameters of OAR for four types of plans

Bladder

 V₄₀

  Median

25.1

27.8

24.3

21.5

− 3.2%

10.8%

− 11.5%

− 22.7%

− 12.6%

− 14.3%

(min–max)

(10.4–37.5)

(14.5–40.2)

(10.9–36)

(10.3–36.6)

< 0.001

0.24

0.001

< 0.001

< 0.001

< 0.001

 D_mean

  Median

34.6

34.4

28.7

28.9

− 17.1%

− 0.6%

0.7%

− 16.0%

− 16.6%

− 16.5%

(min–max)

(28.7–37.7)

(28.8–38.2)

(20.8–34.5)

(20.5–34.6)

< 0.001

0.879

0.106

< 0.001

< 0.001

< 0.001

Femur head—L

 V₃₀

  Median

9.3

6.2

5.2

5.1

− 44.1%

− 33.3%

− 1.9%

− 17.7%

− 16.1%

− 45.2%

(min–max)

(0–14.6)

(1.3–15.4)

(0.4–17.9)

(0.1–12.9)

0.503

0.126

0.016

0.003

0.469

0.001

 D_mean

  Median

19.5

19.6

19

18.8

− 2.6%

0.5%

− 1.1%

− 4.1%

− 3.1%

− 3.6%

(min–max)

(15.7–19.8)

(17.6–19.9)

(13.2–19.3)

(13.1–19.4)

< 0.001

0.081

0.427

< 0.001

< 0.001

< 0.001

Femur head—R

 V₃₀

  Median

8.8

5.7

5.2

5.1

− 40.9%

− 35.2%

− 1.9%

− 10.5%

− 8.8%

− 42.0%

(min–max)

(0–14.6)

(1.3–17)

(0.1–20.1)

(0.1–12.5)

0.136

0.079

0.028

0.004

0.9

< 0.001

D_mean

 Median

19.6

19.5

19.1

19

− 2.6%

− 0.5%

− 0.5%

− 2.6%

− 2.1%

− 3.1%

(min–max)

(17.2–19.8)

(16.1–19.8)

(11–19.3)

(10.9–19.4)

< 0.001

0.611

0.865

< 0.001

< 0.001

< 0.001

Rectum

 V₃₀

  Median

71.8

82

65.6

62

− 8.6%

14.2%

− 5.5%

− 24.4%

− 20.0%

− 13.6%

(min–max)

(36.5–96.9)

(37.4–97.8)

(23.3–70.2)

(22.8–70.5)

< 0.001

0.299

0.001

< 0.001

< 0.001

< 0.001

 V₄₀

  Median

33.8

35.5

34.4

32.8

1.8%

5.0%

− 4.7%

− 7.6%

− 3.1%

− 3.0%

(min–max)

(6.9–37.1)

(8.1–40.4)

(11.3–37.1)

(9.6–37.8)

0.823

0.248

0.211

< 0.001

0.001

0.761

 D_mean

  Median

35.6

36.7

34.1

33.9

− 4.2%

3.1%

− 0.6%

− 7.6%

− 7.1%

− 4.8%

(min–max)

(28.3–38.4)

(28.6–38.9)

(23–36.1)

(23.1–35.5)

< 0.001

0.053

0.03

< 0.001

< 0.001

< 0.001