Table 3.
Detection of the IT and ULP on non-ECG-gated CTA, single-diastolic-phase ECG-gated CTA, and full-phase ECG-gated CTA in each anatomical segment
| Non-ECG-gated CTA | Single-diastolic-phase ECG-gated CTA | Full-phase ECG-gated CTA | P value* | P value† | P value‡ | |
|---|---|---|---|---|---|---|
| Ascending aorta (n = 25) | ||||||
| Accuracy | 72 (90, 54) | 76 (93, 60) | 88 (100, 75) | 0.65 | 0.18 | 0.16 |
| Sensitivity | 54 (81, 27) | 69 (94, 44) | 100 (100, 100) | |||
| Specificity | 92 (100, 76) | 83 (100, 62) | 75 (100, 51) | |||
| Aortic arch (n = 37) | ||||||
| Accuracy | 86 (98, 75) | 92 (100, 83) | 95 (100, 87) | 0.31 | 0.31 | 0.083 |
| Sensitivity | 50 (90, 10) | 50 (90, 10) | 67 (100, 29) | |||
| Specificity | 94 (100, 85) | 100 (100, 100) | 100 (100, 100) | |||
| Proximal descending aorta (n = 71) | ||||||
| Accuracy | 69 (80, 58) | 75 (85, 65) | 86 (94, 78) | 0.005 | 0.31 | 0.005 |
| Sensitivity | 60 (79, 41) | 56 (75, 37) | 84 (98, 70) | |||
| Specificity | 74 (87, 61) | 85 (95, 74) | 87 (97, 77) | |||
| Distal descending aorta (n = 71) | ||||||
| Accuracy | 89 (96, 81) | 92 (98, 85) | 90 (97, 83) | 0.53 | 0.56 | 0.74 |
| Sensitivity | 80 (100, 55) | 90 (100, 71) | 90 (100, 76) | |||
| Specificity | 90 (98, 83) | 92 (99, 85) | 90 (98, 83) | |||
Data are presented as percentages with 95% confidence intervals, 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