Table 1

Basic and clinical characteristics of the study population (n = 9)

Age (years)

     <45
4
     ≥ 45
5
Gender

     Male
4
     Female
5
Cancer type

     Lung cancer
2
     Breast cancer
3
     Colorectal cancer
2
     Other cancer types
2
Spinal metastasis site(n = 10)

     Cervical
2
     Thoracic
5
     Lumbar
3
Total volume of GTV (mm3)

     ≤ 20
2
     20 ~ 40
6
     ≥ 40
2

Gong et al. Radiation Oncology 2008 3:11   doi:10.1186/1748-717X-3-11