Table 1:
Aneurysm detection with cerebral CTA compared with a 3D-DSA reference standarda
| Approach | Results (No.) |
Statistical Analysis (%) |
|||||||
|---|---|---|---|---|---|---|---|---|---|
| TP | TN | FP | FN | Sensitivity | Specificity | PPV | NPV | Accuracy | |
| Per patient | |||||||||
| Group A | 60 | 39 | 1 | 2 | 96.8 (89.0–99.1) | 97.5 (87.1–99.6) | 98.4 (91.2–99.7) | 95.1 (83.9–98.7) | 97.0 (91.7–99.0) |
| Group B | 58 | 42 | 1 | 1 | 98.3 (91.0–99.7) | 97.7 (87.9–99.6) | 98.3 (91.0–99.7) | 97.7 (87.9–99.6) | 98.0 (93.1–99.5) |
| Per aneurysm | |||||||||
| Group A | 77 | 39 | 3 | 10 | 88.5 (81.6–95.4) | 92.9 (88.6–98.6) | 96.3 (91.3–100.0) | 79.6 (67.3–89.8) | 89.9 (84.5–94.6) |
| Group B | 66 | 42 | 3 | 4 | 94.3 (88.6–98.6) | 93.3 (84.4–100.0) | 95.7 (89.9–100.0) | 91.3 (82.6–97.8) | 93.9 (88.7–98.3) |
Note:—TP indicates true positive; TN, true negative; FP, false positive; FN, false negative.
a
The data in parentheses are 95% confidence intervals.