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| Type I focal |
| ≤10 mm in length intrastent |
| IA articulation or gap |
| IB margin |
| IC focal body |
| ID multifocal |
| Type 2 diffuse |
| >10 mm intrastent |
| Type 3 proliferative |
| 10 mm extending beyond the stent margins |
| Type 4 total occlusion |
| Restenotic lesions with TIMI flow grade of 0 |
