Table 3.
Assessment of the performance of 18F-FDG PET/CT and CECT for identifying metastatic cervical lymph node disease
| Imaging Modality | TP (n) | FP (n) | FN (n) | TN (n) | Sensitivity (%) | Specificity (%) | Accuracy (%) | PPV (%) | NPV (%) |
|---|---|---|---|---|---|---|---|---|---|
| Neck Level (n = 579) | |||||||||
| PET/CT | 57 | 72 | 26 | 424 | 69 (57, 78) | 86 (82, 88) | 83 (80, 86) | 44 (36, 53) | 94 (92, 96) |
| CECT | 44 | 46 | 39 | 450 | 53 (42, 64) | 91 (88, 93) | 85 (82, 89) | 49 (38, 60) | 92 (89, 94) |
| p value | 0.056 | 0.014 | 0.334 | 0.583 | 0.231 | ||||
| Neck Side (n= 116) | |||||||||
| PET/CT | 50 | 28 | 3 | 35 | 94 (83, 99) | 56 (43, 68) | 73 (64, 81) | 64 (52, 74) | 92 (78, 98) |
| CECT | 35 | 15 | 18 | 48 | 66 (52, 78) | 76 (64, 86) | 72 (62, 79) | 70 (55, 82) | 73 (60, 83) |
| p value | 0.001 | 0.024 | 0.883 | 0.619 | 0.034 | ||||
TP: True Positive
FP: False Positive
FN: False Negative
TN: True Negative
PPV: Positive Predictive Value
NPV: Negative Predictive Value