Table 1 Baseline data and CT/MRI parameters
Variables | All patients (n = 87) |
|---|---|
Age (years) | 58 (43,67) |
Male | 45 (51.7%) |
Bony vertebral canal area by CT measurement (mm2) | 253.8 ± 52.0 |
Cross-sectional area of the dural sac by MRI measurement (mm2) | 82.9 (62.5112.5) |
Nerve root canal bony area by CT measurement (mm2) | 79.0 ± 30.1 |
Yellow ligament thickness by MRI measurement (mm) | 5.2 (4.3,5.6) |
Real spinal canal area by CT measurement (mm2) | 35.3 (28.5,45.2) |
Nerve root canal real area by CT measurement (mm2) | 45.1 (31.3,59.4) |
Vertebral canal sagittal diameter by CT measurement (mm) | 19.8 (18.1,20.9) |
Distance between the articular joints by CT measurement (mm) | 16.4 (15.3,18.0) |
Soft tissue invasion ratio of the vertebral canal | 0.86 (0.82,0.88) |
Invasion ratio of the nerve root canal | 0.42 ± 0.12 |