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Table 3 Dosimetric statistics between the supine and prone IMRT patients

From: Applying a RapidPlan model trained on a technique and orientation to another: a feasibility and dosimetric evaluation

 

Original

RapidPlan

Mean

SD

95 % CIs

(%)

P

Mean

SD

95 % CIs

(%)

P

HI_PGTV

S.

0.04

0.01

0.04 ~ 0.05

0

0.66*

0.05

0.01

0.04 ~ 0.05

0

0.97

P.

0.04

0.01

0.04 ~ 0.05

0.05

0.01

0.04 ~ 0.06

HI_PTV

S.

0.24

0.01

0.24 ~ 0.25

0.01

0.24*

0.25

0.01

0.25 ~ 0.26

0.01

0.22*

P.

0.25

0.01

0.24 ~ 0.25

0.26

0.02

0.25 ~ 0.26

CI_PGTV

S.

1.03

0.07

0.99 ~ 1.09

0.01

0.73

1.01

0.06

0.97 ~ 1.05

0.01

0.48

P.

1.02

0.05

1.00 ~ 1.04

1.02

0.05

0.99 ~ 1.04

CI_PTV

S.

1.02

0.02

1.00 ~ 1.04

0.01

0.16

1.19

0.07

1.14 ~ 1.24

0.01

0.56*

P.

1.01

0.02

1.00 ~ 1.02

1.18

0.05

1.16 ~ 1.20

Dmax

S.

52.93

0.45

52.61 ~ 53.25

0.03 (0.06 %)

0.98

54.73

1.67

53.53 ~ 55.93

0.41 (0.75 %)

0.48

P.

52.96

0.45

52.75 ~ 53.17

54.32

1.46

53.64 ~ 55.00

D2 %

S.

52.56

0.41

52.26 ~ 52.85

0.07 (0.13 %)

0.68*

52.71

0.24

52.53 ~ 52.88

0.08 (0.15 %)

0.86

P.

52.63

0.45

52.42 ~ 52.84

52.79

0.61

52.50 ~ 53.07

D50 %_UB

S.

34.13

2.73

32.16 ~ 36.06

0.41 (1.20 %)

0.74*

25.12

0.84

24.52 ~ 25.72

0.05 (0.20 %)

0.93*

P.

33.72

3.12

32.26 ~ 35.18

25.07

1.53

24.36 ~ 25.79

D50 %_FH

S.

18.89

2.69

16.96 ~ 20.81

4.85 (25.67 %)

<0.01*

14.67

1.80

13.38 ~ 15.95

1.41 (9.61 %)

0.01*

P.

14.04

2.28

12.97 ~ 15.11

13.26

0.94

12.82 ~ 13.70

Dmean_UB

S.

34.25

2.90

32.17 ~ 36.32

0.39 (1.14 %)

0.72*

26.19

0.97

25.50 ~ 26.89

0.08 (0.31 %)

0.87*

P.

33.86

2.77

32.56 ~ 35.15

26.27

1.36

25.64 ~ 26.91

Dmean_FH

S.

19.23

2.41

17.51 ~ 20.96

4.45 (23.14 %)

<0.01

15.41

1.07

14.64 ~ 16.17

1.18 (7.66 %)

<0.01*

P.

14.78

1.31

14.17 ~ 15.39

14.23

0.91

13.81 ~ 14.66

  1. Abbreviations: S. supine, P. prone, HI homogeneity index, CI conformity index, (%) difference between the supine and prone plans (% relative to the supine value), D max global maximum dose, D 2 % near maximum dose, SD standard deviation, 95 % CI 95 % confidence interval, D 50 % dose to the 50 % volume of the structure, D mean mean dose, FH femoral head, UB urinary bladder. Dose unit (Gy)
  2. *Independent sample t-test, otherwise Mann-Whitney U test was used