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Calculation of Gensini scores.
| Stenosis | Scores | Affected arteries | Scores |
|---|---|---|---|
| <25% | 1 | Left main coronary artery | 5 |
| 25–50% | 2 | Left anterior descending artery or proximal end of circumflex artery | 2.5 |
| 51–75% | 4 | Middle region of left anterior descending artery | 1.5 |
| 76–90% | 8 | Distal end of left anterior descending artery | 1 |
| 91–99% | 16 | Middle or distal end of left circumflex artery | 1 |
| 100% | 32 | Right coronary artery and small branches | 1, 0.5 |
