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Table 2 Evaluation parameters for OARs and their P values

From: Feasibility of Monte-Carlo algorithm in comparison with collapse-cone dose calculation algorithm of a commercial treatment planning system in the presence of high-density metallic implant: a dosimetric study

  

1

2

3

4

P value

 

Technique/parameter

4FMC6MV

4FMC6MV_WP

4FCC6MV

4FCC6MV_WP

1 vs. 2

3 vs. 4

1 vs.3

2 vs. 4

BLADDER

Dmax (in Gy)

50.93 ± 1.21

50.82 ± 1.38

49.13 ± 0.87

49.23 ± 1.19

NS

NS

0.001

0.001

 

Dmean (in Gy)

47.24 ± 0.91

46.61 ± 1.06

46.96 ± 0.96

46.51 ± 1.12

NS

NS

NS

0.036

 

D2cc (in Gy)

49.42 ± 1.08

49.34 ± 1.17

48.59 ± 0.81

48.72 ± 1.14

NS

NS

0.001

0.001

 

V45 (in %)

94.93 ± 4.19

90.84 ± 8.15

94.37 ± 4.26

90.67 ± 8.42

NS

NS

NS

NS

 

V50 (in %)

1.36 ± 1.92

2.17 ± 7.09

0.03 ± 0.07

1.76 ± 6.34

NS

NS

0.015

NS

RECTUM

Dmax (in Gy)

50.81 ± 1.36

50.52 ± 1.31

48.81 ± 1.27

48.44 ± 1.14

NS

NS

0.001

0.001

 

Dmean (in Gy)

45.48 ± 4.68

45.61 ± 1.47

42.23 ± 9.61

45.22 ± 1.37

NS

NS

NS

0.001

 

D2cc (in Gy)

48.97 ± 1.41

48.87 ± 1.21

48.36 ± 1.27

47.92 ± 1.15

NS

NS

0.001

0.001

 

V45 (in %)

87.66 ± 15.62

84.92 ± 8.15

75.71 ± 34.28

83.49 ± 8.68

NS

NS

0.012

0.004

 

V50 (in %)

7.99 ± 18.11

4.35 ± 11.32

8.39 ± 21.92

0.31 ± 0.79

NS

NS

NS

NS

BOWEL

V5 (in %)

82.93 ± 12.44

88.01 ± 15.09

82.59 ± 12.56

87.93 ± 15.11

NS

NS

NS

NS

 

V15 (in %)

63.64 ± 11.95

68.66 ± 15.01

63.64 ± 12.46

69.06 ± 15.01

NS

NS

NS

0.003

 

V30 (in %)

36.37 ± 7.71

36.89 ± 11.01

36.53 ± 7.35

37.17 ± 10.96

NS

NS

NS

0.011

 

V15Gy (in cm3)

1588.97 ± 377.29

895.89 ± 367.55

1584.39 ± 367.82

900.51 ± 369.89

0.015

0.022

NS

0.002

 

V45Gy (in cm3)

157.91 ± 62.54

86.82 ± 66.38

139.84 ± 61.03

73.59 ± 61.53

NS

NS

0.004

0.001

 

Dmean (in Gy)

22.08 ± 3.49

23.26 ± 4.53

22.13 ± 3.51

23.31 ± 4.54

NS

NS

NS

NS

RFH

Dmean (in Gy)

21.89 ± 3.59

23.39 ± 2.84

21.91 ± 3.95

23.41 ± 2.89

0.035

0.024

NS

NS

LFH

Dmean (in Gy)

22.37 ± 3.18

23.57 ± 2.76

22.29 ± 3.48

23.58 ± 2.81

NS

NS

NS

NS

TMU

 

245.21 ± 9.78

243.13 ± 14.68

245.47 ± 8.37

244.41 ± 15.54

NS

NS

NS

NS

  1. 1, 4FMC6MV; 2, 4FMC6MV_WP; 3, 4FCC6MV; 4, 4FCC6MV_WP
  2. WP Without prosthesis, RFH Right femoral head, LFH Left femoral head, TMU Total monitor unit, NS Non-significant