| Vessel seen | No. of vessels seen by observer 1 | % No. of vessels seen by observer 1 | No. of vessels seen by observer 2 | % No. of vessels seen by observer 2 |
|---|---|---|---|---|
| Coronary sinus (CS) | 16 | 100% | 16 | 100% |
| Great cardiac vein (GCV) | 16 | 100% | 16 | 100% |
| Posterior inter-ventricular vein | 12 | 75% | 12 | 75% |
| Posterior vein of the LV | 8 | 50% | 9 | 56% |
| Vein of marshall | 0 | 0 | 0 | 0 |
| Left marginal vein | 12 | 75% | 11 | 69% |
| Anterior inter-ventricular vein | 11 | 69% | 10 | 63% |
| Additional veins | 5 | 31% | 3 | 19% |