| TI-RADS 3 | TI-RADS 4 | TI-RADS 5 | Total nodules |
Sensitivity | 100 | 91.7 | 100 | 96.4% |
Specificity | 46.4 | 38.4 | 10 | 40.7% |
PPV (precision) | 2.2 | 19.6 | 62.5 | 21.4% |
NPV | 100 | 96.6 | 100 | 98.6% |
Accuracy | 47.1 | 45.9 | 64 | 48.7% |