| Characteristic | Number (N = 156) | Percentage (%) |
| Plaque | 133 | 85.25 |
| Overload | 103 | 66.02 |
| Calcification | 48 | 30.76 |
| Severe stenosis | 47 | 30.12 |
| Occlusion | 4 | 2.56 |
| Wall thrombosis | 3 | 1.92 |