Table 4.
For translational purposes, the conversion equations that resulted from the linear correlation analyses of the different parameters between the upright X-ray, prone CT scan, and supine MRI are provided for the thoracic (Th) and lumbar (L) Cobb angles
| Cobb angle | ||||
|---|---|---|---|---|
| Upright X-ray | Prone CT scan | Supine MRI | ||
| Cobb angle | Upright X-ray | – | Th: CT (°) = −6.2 + 0.88 * X-ray (°) L: CT (°) = −2.7 + 0.81 * X-ray (°) |
Th: MRI (°) = 2.9 + 0.79 * X-ray (°) L: MRI (°) = −2.1 + 0.85 * X-ray (°) |
| Prone CT | Th: X-ray (°) = 16.6 + 0.96 * CT (°) L: X-ray (°) = 11.1 + 1.00 * CT (°) |
– | Th: MRI (°) = 11.0 + 0.85 * CT (°) L: MRI (°) = 4.9 + 0.92 * CT (°) |
|
| Supine MRI | Th: X-ray (°) = 10.8 + 1.01 * MRI (°) L: X-ray (°) = 9.5 + 0.98 * MRI (°) |
Th: CT (°) = −2.8 + 1.00 * MRI (°) L: CT (°) = 2.6 + 0.86 * MRI (°) |
– | |