Definition of the thrombolysis in myocardial infarction (TIMI) scores
| TIMI | Definition |
| 0 | No perfusion. |
| 1 | Penetration without perfusion. Penetration past initial occlusion but no distal branch filling. |
| 2 | Partial perfusion of the artery with incomplete or slow distal branch filling. |
| 3 | Complete perfusion of the artery. |