Table 3 Comparison of lesion features between culprit and non-culprit dissections
| n (%) | |||
|---|---|---|---|
|
Culprit n = 55 |
Non-culprit n = 20 | P value | |
| Lesion location | 0.073 | ||
| ICA | 6 (10.9) | 1 (5.0) | |
| MCA | 5 (9.1) | 1 (5.0) | |
| VA | 40 (72.7) | 12 (60.0) | |
| BA | 3 (5.5) | 6 (30.0) | |
| PCA | 1 (1.8) | 0 (0) | |
| Lumen shape | 0.124 | ||
| Normal | 9 (16.4) | 4 (20.0) | |
| Stenosis | 27 (49.1) | 5 (25.0) | |
| Dilatation | 19 (34.5) | 10 (50.0) | |
| Stenosis and dilatation | 0 (0) | 1 (5.0) | |
| Hematoma | 51 (92.7) | 13 (65.0) | 0.003 |
| Hematoma signal on T1WI | 0.003 | ||
| Isointensity | 4 (7.3) | 7 (35.0) | |
| Hyperintensity | 19 (34.5) | 1 (5.0) | |
| Hypointensity | 7 (12.7) | 5 (25.0) | |
| Heterogeneous intensity | 25 (45.5) | 7 (35.0) | |
| Double lumen | 34 (61.8) | 14 (70.0) | 0.514 |
| Intimal flap | 51 (92.7) | 19 (95.0) | 0.727 |
| Thrombus enhancement | 37 (67.3) | 10 (20.0) | 0.171 |
| Intimal flap enhancement | 42 (76.4) | 17 (85.0) | 0.419 |
| Vessel wall enhancement grade | 0.739 | ||
| 1: No enhancement | 15 (27.3) | 4 (20.0) | |
| 2: Enhancement | 15 (27.3) | 7 (35.0) | |
| 3: Obvious enhancement | 25 (45.5) | 9 (45.0) | |