Table 2.
Diagnostic performance Indicators of PET-CT SuvMax and MRI findings in the detection of recurrence.
| PET-CT NFX | PET-CT neck | MRI | |
|---|---|---|---|
| Area under the curve | 0.719 | 0.514 | ‒ |
| 95% Confidence Interval | 0.509‒0.929 | 0.281‒0.746 | ‒ |
| Best cut-off point | >4.58 | ‒ | ‒ |
| Sensitivity, [TP/(TP + FN)] | 6/8 (75.0%) | ‒ | 8/8 (100.0%) |
| Specificity, [TN/(TN + FP)] | 23/32 (71.9%) | ‒ | 5/32 (15.6%) |
| PPV, [TP/(TP + FP)] | 6/15 (40.0%) | ‒ | 8/35 (22.9%) |
| NPV, [TN/(FN + TN)] | 23/25 (92.0%) | ‒ | 5/5 (100.0%) |
| Accuracy, [(TP + TN)/(N)] | 29/40 (72.5%) | ‒ | 13/40 (32.5%) |
| p-valuea | 0.036 | ‒ | 0.563 |
TP, True Positive; FN, False Negative; TN, True Negative; FP, False Positive; N, Total number of cases; PPV, Positive Predictive Value; NPV, Negative Predictive Value.
a
Fisher's definite result probability test.