Table 2.
Detection of the IT and ULP on non-ECG-gated CTA, single-diastolic-phase ECG-gated CTA, and full-phase ECG-gated CTA; all cases, AD and IMH
| Non-ECG-gated CTA | Single-diastolic-phase ECG-gated CTA | Full-phase ECG-gated CTA | P value* | P value† | P value‡ | |
|---|---|---|---|---|---|---|
| All cases (n = 204) | ||||||
| Accuracy | 79 (85, 74) | 84 (89, 79) | 89 (93, 85) | 0.13 | 0.008 | 0.001 |
| Sensitivity | 61 (74, 48) | 64 (78, 52) | 87 (96, 78) | |||
| Specificity | 86 (92, 80) | 91 (95, 86) | 90 (95, 85) | |||
| AD (n = 97) | ||||||
| Accuracy | 79 (87, 71) | 79 (87, 71) | 90 (96, 84) | 1.0 | 0.020 | 0.029 |
| Sensitivity | 59 (77, 41) | 55 (73, 37) | 93 (100, 84) | |||
| Specificity | 88 (96, 81) | 90 (97, 82) | 88 (96, 81) | |||
| IMH (n = 107) | ||||||
| Accuracy | 79 (87, 72) | 88 (94, 82) | 90 (95, 84) | 0.038 | 0.15 | 0.016 |
| Sensitivity | 64 (82, 45) | 76 (93, 59) | 80 (93, 59) | |||
| Specificity | 84 (92, 76) | 91 (98, 85) | 93 (98, 87) | |||
Data are presented as percentages with 95% confidence intervals in parentheses, unless otherwise indicated
IT intimal tear, ULP ulcer-like projection, ECG electrocardiogram, CTA CT angiography, AD aortic dissection, IMH intramural hematoma
*Non-ECG-gated CTA vs single-diastolic-phase ECG-gated CTA
†Single-diastolic-phase ECG-gated CTA vs full-phase ECG-gated CTA
‡Non-ECG-gated CTA vs full-phase ECG-gated CTA