Comparative Analysis of PET and PET/CT Site-Based Performance in 111 Suggestive Lesions in 36 Patients with Suspected Occult Cancer Recurrence Due to Rising Levels of Tumor Markers
| Performance | PET | PET/CT |
|---|---|---|
| TP (n) | 80 | 83 |
| TN (n) | 14 | 25 |
| FP (n) | 14 | 3 |
| FN (n) | 3 | — |
| Sensitivity (%) | 96 | 100 |
| Specificity* (%) | 50 | 89 |
| Accuracy* (%) | 85 | 97 |
| PPV (%) | 85 | 97 |
| NPV (%) | 82 | 100 |
↵* P statistically significant for specificity (P < 0.05) and accuracy (P < 0.001).