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Table 2 Summary of DVH analysis for organs at risk

From: Whole abdomen radiation therapy in ovarian cancers: a comparison between fixed beam and volumetric arc based intensity modulation

 

IMRT6

IMRT15

RA15

RA6

P

   

Bone Marrow (1095 ± 235 cm3)

 

Mean [Gy]

24.7 ± 1.4

22.8 ± 1.5

22.6 ± 1.5

23.4 ± 1.3

b,c

D 1% [Gy]

44.9 ± 0.9

44.8 ± 0.4

45.5 ± 0.7

45.6 ± 0.9

a,b

V 30 Gy [%]

35.0 ± 4.0

31.8 ± 4.1

29.6 ± 5.1

31.5 ± 5.1

b,c

V 45 Gy [%]

1.3 ± 1.2

0.9 ± 0.7

2.2 ± 1.3

2.2 ± 1.4

a,b

   

Bladder (208 ± 219 cm3)

 

Mean [Gy]

39.6 ± 1.9

38.7 ± 2.6

39.5 ± 1.5

40.4 ± 1.2

NS

D 1% [Gy]

46.9 ± 0.8

48.5 ± 15.2

46.5 ± 0.5

46.9 ± 0.7

NS

V 40 Gy [%]

57.8 ± 11.3

58.4 ± 25.8

56.7 ± 9.6

61.4 ± 9.1

NS

   

Bladder - PTV (131 ± 140 cm3)

 

Mean [Gy]

36.5 ± 1.8

35.2 ± 0.8

36.9 ± 0.9

38.3 ± 0.8

a,b,d

D 1% [Gy]

45.1 ± 1.3

44.7 ± 1.0

45.3 ± 1.0

46.0 ± 1.6

b

V 40 Gy [%]

32.7 ± 12.5

26.1 ± 7.1

31.9 ± 8.6

39.6 ± 8.3

NS

   

Heart (438 ± 166 cm3)

 

Mean [Gy]

9.1 ± 1.6

7.8 ± 1.0

7.7 ± 1.0

8.6 ± 1.1

c,d

D 1% [Gy]

23.8 ± 0.5

23.4 ± 0.2

24.2 ± 0.4

24.5 ± 0.4

a,b

   

Kidneys (242 ± 21 cm3)

 

Mean [Gy]

20.0 ± 3.3

14.7 ± 1.8

16.0 ± 1.8

17.0 ± 2.0

a,b,c

D 1% [Gy]

31.5 ± 1.5

27.3 ± 1.5

29.7 ± 1.3

29.6 ± 1.5

a,b,c

V 20 Gy [%]

51.7 ± 14.7

32.1 ± 8.0

41.1 ± 9.5

42.0 ± 11.0

c

   

Kidneys - PTV (141 ± 18 cm3)

 

Mean [Gy]

16.1 ± 3.0

9.8 ± 1.9

10.3 ± 0.9

11.7 ± 0.7

b,c

D 1% [Gy]

25.7 ± 1.9

20.9 ± 1.2

23.2 ± 1.0

23.9 ± 1.5

a,b,c

V 20 Gy [%]

22.9 ± 11.9

2.7 ± 28

5.7 ± 2.2

6.9 ± 2.5

a,b,c,d

   

Liver (1144 ± 231 cm3)

 

Mean [Gy]

23.2 ± 0.5

21.8 ± 0.9

22.4 ± 0.7

22.9 ± 0.3

NS

D 1% [Gy]

30.9 ± 1.0

29.4 ± 1.4

28.7 ± 0.9

29.6 ± 0.9

NS

V 20 Gy [%]

80.7 ± 2.6

77.1 ± 3.5

79.5 ± 3.2

80.5 ± 2.3

c

   

Normal Liver (273 ± 84 cm3)

 

Mean [Gy]

16.4 ± 0.4

14.0 ± 0.9

14.8 ± 0.5

15.9 ± 0.4

b,c

D 1% [Gy]

26.5 ± 0.7

25.2 ± 1.3

25.7 ± 0.8

26.6 ± 0.4

c,d

V 20 Gy [%]

26.1 ± 3.9

17.2 ± 3.8

23.2 ± 3.1

27.9 ± 2.7

a,c,d

   

Rectum (129 ± 84 cm3)

 

Mean [Gy]

40.7 ± 2.6

40.8 ± 2.4

41.1 ± 2.5

41.3 ± 2.5

NS

D 1% [Gy]

46.1 ± 0.9

45.9 ± 0.7

46.4 ± 0.7

46.6 ± 0.5

NS

V 45 Gy [%]

9.7 ± 10.9

8.2 ± 4.5

14.9 ± 11.7

17.1 ± 6.1

a,b

   

Spine (23 ± 6 cm3)

 

D 1% [Gy]

22.8 ± 1.9

19.0 ± 1.8

19.4 ± 1.1

19.6 ± 1.5

b,c

  1. Dx% = dose received by the x% of the volume; Vx% = volume receiving at least xGy of the prescribed dose.