Table 2 SBRT treatment (n = 387) characteristics

Number of vertebras treated in one target volume

1

1 - 6

Number of vertebras treated in one target volume n = 1

70.4

Number of vertebras treated in one target volume n = 2-3

24.7

Number of vertebras treated in one target volume n = 4-6

4.9

Treatment fractions

3

1 - 20

Treatment fractions n = 1

39.5

Treatment fractions n = 2-5

51.4

Treatment fractions n = 6-20

9.1

Prescription dose (Gy)

24

8 - 60

PTV (cm³)

34

0.8 - 721

Max. point dose PRV spinal cord

10

2 - 65

Prescription dose (EQD2/10 Gy)

37.7

12 - 81

Max. point dose PRV spinal cord (EQD2/2 Gy)

22.4

2 - 112