Table 3. Validation of 3D model to identify references seen in real surgery.
| Intrasphenoidal references | Sensitivity | Specificity | PPV | NPV |
|---|---|---|---|---|
| Sellar prominence | 100% | 100% | 100% | 100% |
| Right optic nerve | 96.6% | 100% | 100% | 80% |
| Left optic nerve | 94.8% | 100% | 100% | 75% |
| Right lateral optic-carotid recess | 94.4% | 100% | 100% | 93.9% |
| Left lateral optic-carotid recess | 96.8% | 100% | 100% | 97.3% |
| Right medial optic-carotid recess | 94.8% | 100% | 100% | 75% |
| Left medial optic-carotid recess | 94.7% | 100% | 100% | 76.9% |
| Right ICA prominence | 98.4% | 100% | 100% | 85.7% |
| Left ICA prominence | 96.5% | 100% | 100% | 83.3% |
| Clival recess | 100% | 100% | 100% | 100% |
| Tuberculum sellae | 100% | 100% | 100% | 100% |
Abbreviations: 3D, three-dimensional; ICA, internal carotid artery; NPV, negative predictive value; PPV, positive predictive value.