Accuracy of 64MSCTA on a per-aneurysm/per-patient basis, with κ and ρ per size
| Size on DSA/RA | Sensitivity of MSCTA, % | Specificity of MSCTA, % | PPV of MSCTA, % | NPV of MSCTA, % | Accuracy of MSCTA, % | κ/ρ (CTA versus DSA) Aneurysm Size |
|---|---|---|---|---|---|---|
| Overall | 97.4/96.0 | 90.0/90.0 | 97.4/96.0 | 90.0/90.0 | 95.8/94.3 | 0.965/0.967 |
| <4 mm | 92.3/90.9 | 100.0/100.0 | 100.0/100.0 | 90.9/90.9 | 95.2/95.6 | 0.711/0.753 |
| 4–10 mm | 100.0/100.0 | 90.0/90.9 | 94.7/92.3 | 100.0/100.0 | 95.8/96.4 | 0.841/0.861 |
| >10 mm | 100.0/100.0 | 100.0/100.0 | 100.0/100.0 | 100.0/100.0 | 100.0/100.0 | 0.476/0.888 |
Note:—MSCTA indicates multisection CT angiography; DSA, digital subtraction angiography; RA, rotational angiography; κ = κ reliability coefficient, ρ = ρ correlation coefficient; CTA, CT angiography. Data show a per-aneurysm/per-patient percentages.