Table 2.
Recorded MRI findings and pain response at 2 and 6 months after RT (n=32).
| MRI findings | Pain response at 2 months |
Pain response at 6 months |
|||
|---|---|---|---|---|---|
| Non-responders | Responders | Non-responders | Responders | ||
| Compression of medulla spinalis/cauda equinaa | Yes (n=8) | 7 | 1 | 6 | 2 |
| No (n=23) | 13 | 10 | 12 | 11 | |
| Nerve root compressionb | Yes (n=15) | 9 | 6 | 7 | 8 |
| No (n=14) | 9 | 5 | 9 | 5 | |
| Progression outside the RT fieldc | Yes (n=19) | 11 | 8 | 11 | 8 |
| No (n=9) | 7 | 2 | 5 | 4 | |
| Progression inside the RT fieldd | Yes (n=2) | 1 | 1 | 1 | 1 |
| No (n=28) | 17 | 11 | 16 | 12 | |
| Fracture progression | Yes (n=17) | 11 | 6 | 9 | 8 |
| No (n=15) | 9 | 6 | 9 | 6 | |
| New fractures | Yes (n=5) | 4 | 1 | 3 | 2 |
| No (n=27) | 16 | 11 | 15 | 12 | |
| Diffuse infiltration of bone marrow | Yes (n=9) | 8 | 1 | 7 | 2 |
| No (n=23) | 12 | 11 | 11 | 12 | |
| Large focal metastases (>75% of vertebral body involvement) | Yes (n=24) | 17 | 7 | 14 | 10 |
| No (n=8) | 3 | 5 | 4 | 4 | |
a
Unable to estimate in 1 patient due to suboptimal image quality.
b
Uncertain findings in 3 patients due to image quality.
c
Unable to obtain in 4 patients due to incomplete examination (only lumbar spine, n=2) and diffuse infiltration of bone marrow (n=2).
d
Unable to obtain in 2 patients due to diffuse metastatic infiltration of bone marrow.