Table 5 Mean value of rectal dosimetry before and after balloon implant

V50

40% ± 17.8

25% ± 17.7

43 ± 28.3

P < 0.0001

V60

30% ± 17.4

15% ± 13.1

57 ± 28.4

P < 0.0001

D50

63Gy ± 20.2

48Gy ± 25.1

25 ± 28.2

P < 0.0001

D70

38Gy ± 16.1

22Gy ± 15.0

46 ± 26.2

P < 0.0001

D80

31Gy ± 15.2

15Gy ± 11.8

57 ± 25.9

P < 0.0001

D90

22Gy ± 14.3

8Gy ± 8.2

67 ± 25.6

P < 0.0001

D100

8Gy ± 8.3

1Gy ± 1.6

82 ± 22.1

P < 0.0001