Accuracy of BSCTA in detecting cerebral aneurysms of different sizes
| Diameter | TP (No.) | TN (No.) | FP (No.) | FN (No.) | Sensitivity (%) (No.) | Specificity (%) (No.) | PPV (%) (No.) | NPV (%) (No.) | Accuracy (%) (No.) |
|---|---|---|---|---|---|---|---|---|---|
| >5.0 mm | 23 | 45 | 0 | 0 | 100 (23/23) | 100 (45/45) | 100 (23/23) | 100 (45/45) | 100 (68/68) |
| 95 % CI | 86–100 | 92–100 | 86–100 | 92–100 | 95–100 | ||||
| 3.1–5.0 mm | 35 | 45 | 0 | 0 | 100 (35/35) | 100 (45/44) | 100 (35/35) | 100 (45/45) | 100 (80/80) |
| 95 % CI | 90–100 | 92–100 | 90–100 | 92–100 | 94–100 | ||||
| ≤3.0 mm | 16 | 45 | 1 | 1 | 94 (16/17) | 98 (45/46) | 94 (16/17) | 98 (45/46) | 97 (61/63) |
| 95 % CI | 73–99 | 89–100 | 73–99 | 89–100 | 89–100 |
Note:—TP indicates true-positive; TN, true-negative; FP, false-positive; FN, false-negative; PPV, positive predictive value; NPV, negative predictive value.