Table 1.

Target and treatment characteristics

Total 16 lesions in 14 patients
Site of Spinal Involvement
Thoracic spine	8
Lumbar spine	7
Sacrum	1
Vertebral body tumors	10
Paraspinal tumors	6
Previous RT to same site
Yes	5
No	11
PTV volume (mL)
Average (±SD)	71.01 ± 60.05
Range	22.62 – 250.65
PTV length (cm)
Average (±SD)	5.29 ± 1.95
Range	3.0 – 8.5
PRV volume (mL)
Average (±SD)	11.76 ± 6.64
Range	4.18 – 26.77
SBRT dose [total dose (Gy)/no. of fractions)]
14/1	5
15/1	1
16/1	1
15/3	3
18/3	3
24/3	1
25/5	1
30/6	1