Table 2 Sensitivity, specificity, accuracy, PPV and NPV of MRI compared to histopathology detection of ON invasion level (n = 38) excluding 6 cases that had treatment before enucleation
Optic nerve invasion | TP (n) | FP (n) | TN (n) | FN (n) | Accuracy (%) | Sensitivity (%) | Specificity (%) | PPV (%) | NPV (%) |
|---|---|---|---|---|---|---|---|---|---|
None | 4 | 4 | 24 | 6 | 67.2 | 40.0 | 85.7 | 50.0 | 80.0 |
Prelaminar | 0 | 6 | 20 | 12 | 52.6 | 0.0 | 76.9 | 0.0 | 62.5 |
Laminar | 3 | 5 | 26 | 4 | 71.4 | 42.9 | 83.9 | 37.5 | 86.7 |
Postlaminar | 8 | 8 | 21 | 1 | 63.3 | 88.9 | 72.4 | 50.0 | 95.5 |