Performances of axial scan and postprocessing techniques
| Method of Evaluation | % Sensitivity (CI) | % Specificity (CI) | % PPV (CI) | % NPV (CI) |
|---|---|---|---|---|
| Axial scan | 90.9 (81.1–100.7) | 94.7 (89.7–99.8) | 88.2 (77.4–99.1) | 96.0 (91.6–100.4) |
| MIP | 78.8 (64.8–92.7) | 92.1 (86.0–98.2) | 81.3 (67.7–94.8) | 90.9 (84.5–97.3) |
| MPR | 75.8 (61.1–90.4) | 90.8 (84.3–97.3) | 78.1 (63.8–92.4) | 89.6 (82.8–96.4) |
| SSD | 39.4 (22.7–56.1) | 88.2 (80.9–95.4) | 59.1 (38.5–79.6) | 77 (68.2–85.9) |
| VR | 87.9 (76.7–99) | 97.4 (93.8–101) | 93.5 (84.9–102.2) | 94.9 (90–99.8) |
| VR + axial scan | 93.9 (85.8–102.1) | 98.7 (96.1–101.2) | 93.5 (84.9–102.2) | 97.4 (93.8–101) |
Note:—CI indicates confidence interval; PPV, positive predictive value; NPV, negative predictive value; MIP, maximum intensity projection; MPR, multiplanar reconstruction; SSD, shaded surface display; VR, volume rendering.