| Diagnostic Indices | Direct Digital/Coronal | Digital Subtraction/ Coronal | Direct Digital/Apical | Digital Subtraction/ Apical |
| Sensitivity | 90% | 80% | 70% | 50% |
| Specificity | 100% | 100% | 90% | 100% |
| PPV | 100% | 100% | 87.5% | 100% |
| NPV | 90% | 83.3% | 75% | 66.7% |
| Accuracy | 95% | 90% | 80% | 75% |