18F-FDG PET Results for 37 NPC Patients for Whom MRI Showed Questionable Findings for Residual or Recurrent Disease
| Site | TP | TN | FP | FN | Sensitivity (%) | Specificity (%) | PPV (%) | NPV (%) | Accuracy (%) | ||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Primary | 11 | 19 | 6 | 1 | 91.6 | (61.5–99.8) | 76.0 (54.9–90.6) | 64.7 (38.3–85.8) | 95.0 | (75.1–99.9) | 81.1 (64.8–92.0) | ||
| Regional node | 9 | 24 | 3 | 1 | 90.0 | (55.5–99.8) | 88.9 (70.8–97.7) | 75.0 (42.8–94.5) | 96.0 | (79.7–99.9) | 89.2 (74.6–97.0) | ||
| Distant | 5 | 29 | 3 | 0 | 100 | — | 90.6 (75.0–98.0) | 62.5 (24.5–91.5) | 100 | — | 91.9 (78.1–98.3) | ||
| Overall | 17 | 10 | 8 | 2 | 89.5 | (66.9–98.7) | 55.6 (30.8–78.5) | 68.0 (46.5–78.5) | 83.3 | (51.6–98.0) | 72.9 (55.9–86.2) | ||
TP = true positive; TN = true negative; FP = false positive; FN = false negative; PPV = positive predictive value; NPV = negative predictive value.
Ranges in parentheses are 95% CIs.