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Table 2 Radiosurgical planning data for extrapolation of excess brain irradiated during SRS treatments for both pre- versus post-surgery. (GTV = gross tumor volume)

From: Pre-operative stereotactic radiosurgery treatment is preferred to post-operative treatment for smaller solitary brain metastases

PT#

Pathology

 

GTV

GTV + 3 mm

Isodose volume

Excess Brain

IDL/GTV

PRE

POST

PRE

POST

PRE

POST

PRE

POST

PRE

POST

1

NSCLC

 

14.85

27.67

35.1

48.79

52.28

72.19

24.51

29.08

3.520539

2.608963

2

Bladder/transitional cell

 

3.36

3.39

11.45

11.83

15.86

18.38

11.99

14.39

4.720238

5.421829

3

NSCLC

 

23.89

8.97

41

16.73

57.38

22.98

26.16

13.54

2.401842

2.561873

4

Lung-papillary adenocarcinoma

 

0.34

2.33

1.84

6.81

2.57

10.41

1.97

7.34

7.558824

4.467811

5

Carcinoid

 

67.88

6.06

116.62

17.79

165.83

27.53

93.5

20.52

2.442988

4.542904

6

NSCLC

 

37.32

27.81

63.61

53.71

101.23

90.5

61.77

62.11

2.712487

3.254225

7

melanoma

 

0.06

5.85

0.79

18.16

1.09

31.05

0.97

18.22

18.16667

5.307692

8

Lung-papillary adenocarcinoma

 

2.8

9.57

7.4

21.87

10.93

27.53

6.73

13.22

3.903571

2.876698

9

NSCLC

 

1.8

5.87

5.68

14.34

8.6

21.02

6.78

12.39

4.777778

3.58092

10

Lung adenocarcinoma

 

0.33

1.55

1.82

7.05

2.8

9.92

2.44

7.07

8.484848

6.4

10

Lung adenocarcinoma

 

17.39

4.8

32.3

17.04

47.78

24.22

23.49

14.36

2.747556

5.045833

11

Lung squamous cell

 

11.38

22.18

22.78

45.05

35.57

82.05

17.41

33.59

3.125659

3.699279

12

Lung adenocarcinoma

 

6.09

9.64

14.11

20.74

22.73

32.16

13.02

15.6

3.732348

3.3361

  

min

0.06

1.55

0.79

6.81

1.09

9.92

0.97

7.07

  
  

max

67.88

27.81

116.62

53.71

165.83

90.5

93.5

62.11

  
  

average

14.42231

10.43769

27.26923

23.07

40.35769

36.14923

22.36462

20.11