Table 2:
Diagnostic performance of MDCTA according to the size of the aneurysm by independent readings
| Size of Aneurysm | Sensitivity (%) | Specificity (%) | Positive Predictive Value (%) | Negative Predictive Value (%) | Accuracy (%) |
|---|---|---|---|---|---|
| <3 mm | |||||
| MDCTA reader 1 | 74.1 (20/27) | 93.3 (14/15) | 95.2 | 66.7 | 81.0 |
| MDCTA reader 2 | 77.8 (21/27) | 93.3 (14/15) | 95.5 | 70.0 | 83.3 |
| 3–5 mm | |||||
| MDCTA reader 1 | 100 (22/22) | 100 (14/14) | 100 | 100 | 100 |
| MDCTA reader 2 | 95.5 (21/22) | 100 (14/14) | 100 | 93.3 | 97.2 |
| >5 mm | |||||
| MDCTA reader 1 | 100 (44/44) | 100 (14/14) | 100 | 100 | 100 |
| MDCTA reader 2 | 100 (44/44) | 100 (14/14) | 100 | 100 | 100 |
Note:–MDCTA indicates multidetector row CT angiography. Numbers in parentheses indicate numbers of aneurysms.