Diagnostic accuracy measures for pseudo-occlusion recognition on CTA compared with DSA for observers 1 and 2
| Pseudo-Occlusion | Atherosclerotic Cause | Dissection | |
|---|---|---|---|
| Observer 1 | |||
| Sensitivity (95% CI) | 82 (57–96) | 92 (64–100) | 63 (35–85) |
| Specificity (95% CI) | 76 (56–90) | 100 (89–100) | 90 (73–98) |
| PPV | 67 (50–80) | 100 (76–100) | 77 (52–92) |
| NPV | 88 (72–95) | 97 (83–100) | 82 (70–90) |
| Observer 2 | |||
| Sensitivity (95% CI) | 82 (57–96) | 100 (75–100) | 75 (47–93) |
| Specificity (95% CI) | 86 (68–96) | 100 (89–100) | 90 (73–98) |
| PPV | 78 (58–90) | 100 (77–100) | 80 (57–92) |
| NPV | 89 (75–95) | 100 (90–100) | 87 (74–94) |
Note:—PPV indicates positive predictive value; NPV, negative predictive value.