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Sensitivity, specificity, PPV, NPV, and accuracy of both PET/CT and US for regional HNSCC recurrence.
| PET/CT | USG | |
|---|---|---|
| Sensitivity | 86% | 81% |
| Specificity | 82% | 87% |
| PPV | 79% | 83% |
| NPV | 89% | 85% |
| Accuracy | 84% | 84% |
PPV: positive predictive value; NPV: negative predictive value.
