Aneurysm detection with cerebral CTA according to aneurysm sizea
| Aneurysm Size | Results (No.) | Statistical Analysis (%) | |||||||
|---|---|---|---|---|---|---|---|---|---|
| TP | TN | FP | FN | Sensitivity | Specificity | PPV | NPV | Accuracy | |
| <3 mm | |||||||||
| Group A | 24 | 39 | 2 | 8 | 75.0 (59.4–90.6) | 95.1 (87.8–100.0) | 92.3 (80.8–100.0) | 83.0 (72.3–93.6) | 86.3 (78.1–93.2) |
| Group B | 17 | 42 | 2 | 4 | 81.0 (61.9–95.2) | 95.5 (88.6–100.0) | 89.5 (73.7–100.0) | 91.3 (82.6–97.8) | 90.8 (83.1–96.9) |
| 3–8 mm | |||||||||
| Group A | 44 | 39 | 1 | 2 | 95.7 (89.1–100.0) | 97.5 (92.5–100.0) | 97.8 (93.3–100.0) | 95.1 (87.8–100.0) | 96.5 (93.0–100.0) |
| Group B | 38 | 42 | 1 | 0 | 100 (100.0–100.0) | 97.7 (93.0–100.0) | 97.4 (92.3–100.0) | 100 (100.0–100.0) | 98.8 (96.3–100.0) |
| >8 mm | |||||||||
| Group A | 9 | 39 | 0 | 0 | 100 (100.0–100.0) | 100 (100.0–100.0) | 100 (100.0–100.0) | 100 (100.0–100.0) | 100 (100.0–100.0) |
| Group B | 11 | 42 | 0 | 0 | 100 (100.0–100.0) | 100 (100.0–100.0) | 100 (100.0–100.0) | 100 (100.0–100.0) | 100 (100.0–100.0) |
Note:—TP indicates true positive; TN, true negative; FP, false positive; FN, false negative.
↵a The data in parentheses are 95% confidence intervals.