TABLE 3:
Case numbers of true-positive (TP), true-negative (TN), false-positive (FP), and false-negative (FN) of different findings on plain film, CT, 3D-CT, and MRI
| Findings | No. of Patients | No. of Positive | Plain film |
CT |
3D-CT |
MRI |
||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| TP | TN | FP | FN | TP | TN | FP | FN | TP | TN | FP | FN | TP | TN | FP | FN | |||
| Occult fracture | 12 | 2 | 0 | 9 | 0 | 2 | 0 | 6 | 0 | 1 | 0 | 4 | 0 | 0 | 2 | 10 | 0 | 0 |
| Avascular necrosis | 12 | 2 | 1 | 9 | 0 | 1 | 0 | 6 | 0 | 1 | 0 | 4 | 0 | 0 | 2 | 10 | 0 | 0 |
| Pseudarthrosis | 12 | 5 | 5 | 7 | 0 | 0 | 2 | 4 | 0 | 0 | 2 | 1 | 0 | 0 | 5 | 7 | 0 | 0 |
| Tearing of the ALL | 12 | 10 | 8 | 2 | 0 | 2 | 1 | 1 | 0 | 5 | 3 | 1 | 0 | 0 | 8 | 2 | 0 | 2 |
| Tearing of the PLL | 12 | 7 | 0 | 5 | 0 | 7 | 0 | 4 | 0 | 3 | 2 | 1 | 0 | 1 | 5 | 5 | 0 | 2 |
| Ligament tears in the posterior column and adjacent soft tissue disruption | 12 | 11 | 1 | 0 | 0 | 11 | 0 | 0 | 0 | 7 | 0 | 0 | 0 | 4 | 11 | 1 | 0 | 0 |
| Cord deformity | 12 | 5 | 0 | 0 | 0 | 12 | 0 | 0 | 0 | 7 | 1 | 0 | 0 | 3 | 5 | 7 | 0 | 0 |
| Spinous process fracture in the cervical region | 3 | 3 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 3 | 0 | 0 | 0 |
| Spinous process fracture in the thoracic region | 9 | 4 | 3 | 5 | 0 | 1 | 1 | 5 | 0 | 1 | 1 | 2 | 0 | 0 | 4 | 5 | 0 | 0 |
| Facet fracture | 12 | 10 | 4 | 2 | 0 | 6 | 4 | 2 | 0 | 1 | 4 | 0 | 0 | 0 | 10 | 2 | 0 | 0 |
| Any fractures in the posterior column | 12 | 11 | 6 | 1 | 0 | 5 | 4 | 1 | 0 | 2 | 4 | 0 | 0 | 0 | 11 | 1 | 0 | 0 |
* Sensitivity = TP/(TP + FN).