Figures & data
table I. Demographic characteristics and radiotherapeutic parameters (N = 185).
Figure 1. Survival curve in the retreatment and the initial treatment groups; mean value was 20.7 months and 32.4 months in each group, which showed statistical difference (p = 0.022).
![Figure 1. Survival curve in the retreatment and the initial treatment groups; mean value was 20.7 months and 32.4 months in each group, which showed statistical difference (p = 0.022).](/cms/asset/5e03b06c-82b2-4451-9899-e7a2defb91ff/ionc_a_666637_f0001_b.gif)
Table II. Follow-up result in the retreatment SBRT and the initial treatment groups (N = 185).
Figure 2. Progression free probability curve of the retreatment and the initial treatment groups; mean value was 18.0 months and 26.0 months in each group, which was statistically different (p = 0.03).
![Figure 2. Progression free probability curve of the retreatment and the initial treatment groups; mean value was 18.0 months and 26.0 months in each group, which was statistically different (p = 0.03).](/cms/asset/896ed4f8-cf0c-4383-bc65-85c8e7902257/ionc_a_666637_f0002_b.gif)
Table III. Comparison between local control failure cases and controlled cases in retreatment group (N = 54).
Table IV. Current studies on spinal SBRT with reported local control rates for patients with image-based tumor progression and previous irradiation.