Table 1.
The number of fractures detected in each site and diagnostic performance with different reconstruction methods of each group.
| Group | Anterior | Lateral | Posterior | Sensitivity (%) | Specificity (%) | PPV (%) | NPV (%) | Accuracy (%) |
|---|---|---|---|---|---|---|---|---|
| OARS1# | 184 | 69 | 78 | 95.94 | 99.96 | 99.70 | 99.38 | 99.46 |
| OARS2# | 184 | 70 | 79 | 96.52 | 99.91 | 99.40 | 99.47 | 99.54 |
| CPRs1 | 153∗ | 70 | 68∗ | 84.35∗ | 98.17 | 87.39∗ | 97.65 | 97.92 |
| CPRs2 | 148∗ | 70 | 70∗ | 83.48∗ | 98.08 | 86.75∗ | 97.53 | 97.80 |
| CR | 150∗ | 55∗ | 69∗ | 79.42∗ | 99.91 | 99.28 | 96.94 | 97.26 |
OARS: oblique axis rib stretch; CPRs: curved planar reformats; CR: conventional reconstruction. ∗p < 0.05, when compared with the gold standard. #A total of 813 and 815 whole ribs (anterior, lateral, and posterior) are shown on the same CT images (about 31.37 percent of all ribs) could be displayed using OARS A step in groups 1 and 2, 1776 and 1763 ribs (anterior and lateral) are shown on the same CT images using OARS A step in groups 1 and 2, respectively. OARS B step can be used to display almost every posterior rib (2588 and 2586 posteriors ribs in groups 1 and 2, respectively), which makes up 99.86% of all ribs. OARS A + B steps can show each complete rib.