Table 2. CT angiographic findings in 72 patients of type A IMH and 209 patients of type A AAD.
| Imaging features | Type A IMH (n=72) | Type AAD (n=209) | P | V |
|---|---|---|---|---|
| Patients of intimal defect (tear in AD), n (%) | 64 (88.9) | 209 (100.0) | ||
| Size of intimal defect (tear in AD), mm | 5.54±2.06 | 25.93±13.00 | <0.001 | 3.231 |
| Location of intimal defect (tear in AD), n (%) | 0.307 | 1.042 | ||
| Proximal ascending aorta | 4 (5.6) | 76 (36.4) | ||
| Distal ascending aorta | 30 (41.7) | 72 (34.4) | ||
| Aorta arch | 21 (29.2) | 41 (19.6) | ||
| Proximal descending aorta | 9 (12.5) | 20 (9.6) | ||
| No intimal defect (tear) | 8 (11.1) | 0 (0) | ||
| Maximal aortic diameter (mm) | 41.84±8.44 | 47.09±10.31 | 0.006 | 0.543 |
| Maximal hematoma thickness (mm) | 12.28±5.65 | |||
| Pleural effusion, n (%) | 32 (44.4) | 62 (29.7) | 0.022 | 5.254 |
| Pericardial effusion, n (%) | 31 (43.1) | 35 (16.7) | <0.001 | 18.76 |
| Range of the lesions, n (segments) | 4.45±1.56 | 5.04±1.72 | 0.012 | 0.026 |
| Coronary arteries involved, n (%) | 3 (4.2) | 80 (38.3) | <0.001 | 29.94 |
IMH, intramural hematoma; AAD, acute aortic dissection; AD, aortic dissection.