Comparison between concerns of nonradiologists about initial imaging versus impressions of neuroradiologistsa
| Incidental Finding Present | Incidental Finding Absent | ||
|---|---|---|---|
| Nonradiologist concern present | 52 (TP) | 81 (FP) | PPV = 0.39 |
| Nonradiologist concern absent | 2807 (FN) | 13,593 (TN) | NPV = 0.83 |
| Sensitivity = 0.02 | Specificity = 0.99 |
Note:—TP indicates true-positive; FP, false-positive; TN, true-negative; FN, false-negative.
↵a PPV = TP/(TP + FP). NPV = TN/(FN + TN). Sensitivity = TP/(TP + FN). Specificity = TN/(TN + FP).