Grading of stenosis (n = 64 CAs) based on diameter measurements
| Stenosis | Reference | Tool A | Tool B | Tool C |
|---|---|---|---|---|
| 100% | 5 | 5 | 5 | 5 |
| 70%–99%* | 7 | 8 | 6 | 10 |
| 50%–69% | 14 | 13 | 13 | 9 |
| 25%–49% | 14 | 13 | 14 | 15 |
| <25% | 24 | 25 | 26 | 25 |
* Cases of near-occlusion (n = 2), rated as 95% stenosis, are included in this group.