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Table 1 HI, CGI, and Paddick indices calculated by the treatment planning system using the cone-based linac, FFF-VMAT linac, and tomotherapy treatment modalities

From: Dosimetric comparison of different treatment modalities for stereotactic radiotherapy

Tumor Diameter

8 mm

18 mm

28 mm

Distance from brainstem

1 mm

6 mm

1 mm

6 mm

1 mm

6 mm

Modality

Cone-based

FFF- VMAT

Tomo

Cone-based

FFF- VMAT

Tomo

Cone-based

FFF- VMAT

Tomo

Cone-based

FFF- VMAT

Tomo

Cone-based

FFF- VMAT

Tomo

Cone-based

FFF- VMAT

Tomo

HI

1.24

1.25

1.20

1.23

1.25

1.23

1.20

1.19

1.25

1.20

1.17

1.24

1.17

1.23

1.21

1.16

1.19

1.23

CGIc

84.59

48.89

47.96

86.25

67.93

46.79

92.02

75.66

69.75

95.35

73.99

67.76

98.99

95.44

86.04

99.84

92.27

86.68

CGIg

103.25

66.45

74.39

103.15

74.30

75.96

88.43

60.53

60.61

89.33

59.71

62.68

74.02

52.79

48.02

75.26

61.62

50.49

CGI

93.92

57.67

61.18

94.71

71.11

61.38

90.23

68.10

65.18

92.34

66.85

62.22

86.50

74.11

67.03

87.55

76.95

68.58

CIPaddick

0.82

0.48

0.47

0.84

0.66

0.45

0.90

0.73

0.68

0.92

0.72

0.66

0.94

0.92

0.84

0.95

0.88

0.81

GI Paddick

4.23

10.97

9.07

4.28

10.58

8.57

3.02

4.90

4.83

3.00

4.93

4.62

2.73

3.67

4.14

2.69

3.21

3.90