Table 1 Summary of patient charateristics and treatment parameters

Number of patients

36

Median age

52

Sex (F/M)

19/17

Histology

Lung

15

Breast

9

Melanoma

7

Kidney

4

Sarcoma

1

No of lesions per patient

2–9 lesions

19

10–25 lesions

17

Tumor location

Frontal

27%

Parietal

18%

Temporal

22%

Cerebellar

16%

Occipital

17%

Radiosurgical dose

18 Gy

11

20 Gy

356

Gross tumor volume (cm³)

Median

0.16

Range

0.07–2.1

Median total GTV

1.33

Range

0.23–4.67

Planning tumor volume (cm³)

Median

0.37

Range

0.15–1.18

Median total PTV

3.42

Range

0.61–9.37