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Table 2 Mean ± standard deviation dose metrics for phantom and example patient plans

From: Radiation treatment planning with embedded dose escalation

 

Metric

Baseline

DVH

Sub-Structure

gEUD (a = − 1)

gEUD (a = − 5)

gEUD (a = − 15)

Phantoms

D0.1 cc (Gy)

27.7 ± 0.8

64.6 ± 10.5

56.5 ± 10.3

48.9 ± 5.7

44.8 ± 5.0

37.4 ± 4.5

gEUD (a = − 1)(Gy)

26.4 ± 0.7

36.1 ± 3.4

33.0 ± 2.0

34.4 ± 4.6

34.4 ± 4.3

31.8 ± 3.6

gEUD (a = − 5) (Gy)

26.3 ± 0.7

32.6 ± 3.1

29.9 ± 1.7

31.7 ± 4.9

32.7 ± 4.1

31.0 ± 3.6

gEUD (a = −15) (Gy)

26.0 ± 0.9

28.6 ± 3.1

26.0 ± 2.1

28.0 ± 5.4

29.9 ± 3.9

29.6 ± 3.3

V150%

0.00 ± 0.00

0.44 ± 0.13

0.32 ± 014

0.41 ± 0.18

0.36 ± 0.25

0.16 ± 0.21

Conformity Index

1.02 ± 0.23

1.15 ± 0.32

1.00 ± 0.18

1.12 ± 0.39

1.18 ± 0.39

1.17 ± 0.36

R50%

4.64 ± 3.27

5.15 ± 2.32

4.83 ± 2.64

4.42 ± 1.83

4.45 ± 1.88

4.21 ± 1.75

Single Fraction MU

795 ± 27

1988 ± 222

1766 ± 259

1612 ± 112

1524 ± 90

1362 ± 146

Mean Segment Size (cm)

4.72 ± 1.55

2.34 ± 0.66

2.61 ± 0.84

2.70 ± 0.69

2.73 ± 0.75

2.81 ± 0.79

Mean Segment Size (normalized)

1.00 ± 016

0.50 ± 0.09

0.55 ± 0.10

0.59 ± 0.12

0.59 ± 0.11

0.61 ± 0.13

Patient - Constrained R50%

D0.1 cc (Gy)

99.6

160.2

143.2

97.2

100.2

98.3

gEUD (a = − 1)(Gy)

76.3

81.8

83.3

77.1

76.9

76.4

gEUD (a = − 5) (Gy)

73.5

76.3

76.6

74.0

73.6

73.5

gEUD (a = − 15) (Gy)

57.2

59.4

59.5

56.6

56.1

56.6

V150%

0.0

0.14

0.19

0.0

0.0

0.0

Conformity Index

0.82

0.84

0.83

0.83

0.83

0.84

R50%

3.37

3.37

3.29

3.01

3.15

3.15

Single Fraction MU

834.6

1194.9

1160.2

878.5

862.5

856.5

Mean Segment Size (cm)

4.03 ± 0.01

2.99 ± 0.03

2.95 ± 0.02

3.81 ± 0.04

3.90 ± 0.01

3.96 ± 0.01

Patient – Unconstrained R50%

D0.1 cc (Gy)

91.9

267.1

221.8

171.0

119.3

98.2

gEUD (a = −1)(Gy)

79.5

90.2

90.3

98.2

84.9

77.2

gEUD (a = −5) (Gy)

73.2

79.3

79.3

85.1

78.8

74.2

gEUD (a = −15) (Gy)

61.5

61.6

66.1

64.2

55.4

59.5

V150%

0.0

0.29

0.31

0.45

0.11

0.0

Conformity Index

0.86

0.95

0.86

1.07

1.04

0.94

R50%

3.94

5.20

5.04

5.70

4.79

4.02

Single Fraction MU

688.9

1822.8

1682.7

1350.7

957.1

737.2

Mean Segment Size (cm)

4.84 ± 0.03

2.08 ± 0.08

2.02 ± 0.03

2.55 ± 0.08

3.88 ± 0.03

4.65 ± 0.04