MRI findings | BS [n (%)] | TS [n (%)] | χ2 value | p value |
---|---|---|---|---|
Site of involvement | 11.106 | 0.025 | ||
Cervical spine | 0 | 1 (3.70%) | ||
Thoracic spine | 2 (14.18%) | 6 (22.22%) | ||
Thoracolumbar spine | 2 (14.18%) | 9 (33.33%) | ||
Lumbar spine | 18 (69.23%) | 9 (33.33%) | ||
Lumbosacral spine | 4 (15.38%) | 2 (7.40%) | ||
Number of affected vertebra | 0.670 | 0.715 | ||
1 | 1 (3.85%) | 1 (3.70%) | ||
2 | 23 (88.46%) | 22 (81.48%) | ||
≥ 3 | 2 (7.69%) | 4 (14.81%) | ||
MRI signal | ||||
Hypointense signal on T1WI | 23 (88.46%) | 26 (96.29%) | 1.165 | 0.280 |
Hyperintense signal on T2WI | 14 (53.85%) | 10 (37.04%) | 1.510 | 0.219 |
Hyperintense signal on STIR | 18 (69.23%) | 21 (77.78%) | 0.498 | 0.480 |
Vertebral change | ||||
Vertebral destruction | 20.974 | < 0.001 | ||
Mild (≤ 1/3) | 23 (88.46%) | 8 (29.63%) | ||
Severe (> 1/3) | 2 (7.41%) | 19 (70.37%) | ||
Vertebral wedge | 0.229 | 0.632 | ||
≤ 1/2 | 7 (26.92%) | 20 (74.07%) | ||
> 1/2 | 1 (3.85%) | 5 (18.52%) | ||
Posterior convex deformity | 1 (3.85%) | 6 (22.22%) | 3.902 | 0.048 |
Vertebral appendage lesion | 3 (11.54%) | 5 (18.52%) | 0.504 | 0.478 |
Dead bone | 0 (0.00%) | 13 (48.15%) | 16.587 | < 0.001 |
Vertebral hyperplasia | 25 (96.15%) | 8 (29.63%) | 24.948 | < 0.001 |
Intervertebral space | 10.540 | 0.005 | ||
Normal | 11 (42.31%) | 2 (7.41%) | ||
Narrow | 15 (57.69%) | 22 (81.48%) | ||
Disappear | 0 (0.00%) | 3 (11.11%) | ||
Abscess | 22.945 | < 0.001 | ||
Paravertebral abscess | 17 (65.38%) | 6 (22.22%) | ||
Epidural abscess | 9 (34.62%) | 8 (29.62%) | ||
Psoas abscess | 0 (0.00%) | 18 (66.67%) | ||
Abscess scope | 27.451 | < 0.001 | ||
Beyond the vertebra lesion | 1 (5.88%) | 17 (94.44%) | ||
In the vertebra lesion | 16 (94.12%) | 1 (5.56%) |