Table 2 Sensitivity, Specificity, PPV, NPV, Accuracy, and Agreement (k) of WB-DWIBS, DWI and both Using bone scan as the Reference Standard
Number of patients (80) | TP | FN | FP | TN | % Sensitivity (CI) | % Specificity (CI) | % PPV (CI) | % NPV (CI) | % Accuracy (CI) | Agreement (k) |
|---|---|---|---|---|---|---|---|---|---|---|
Bony Metastases detected by conventional T1 WI MRI | 65 | 5 | 3 | 7 | 90.5 (70.2–92.4) | 71.2 (8.9–95.5) | 90.2 (70.0–94.3) | 62.8 (8.9–95.5) | 89.8 (60.4–92.8) | 0.499 |
Bony Metastases detected by DWI | 62 | 8 | 4 | 6 | 89.9 (70–91.4) | 71.0 (8.0–94.6) | 89.9 (69.6–93.6) | 62.03 (8.2–95.1) | 89.2 (60.1–92.3) | 0.612 |
Bony metastasis detected by WBDWSI | 70 | 4 | 3 | 3 | 94.8 (74.8–98.2) | 76.2 (9.2–98.9) | 92.8 (71.1–98.8) | 66.1 (99.2–99.0) | 91.7 (67.9–98.1) | 0.827 |
Bony metastasis detected by WBDWSI T1WI and DWI | 74 | 0 | 5 | 1 | 94.7 (73.7–97.5) | 78.4 (8.4–97.8) | 93.9 (72.3–97.7) | 66.7 (98.5–99.2) | 92.8 (78.2–90.3) | 0.896 |