| 1. Lumen CSA = Area bounded by luminal border |
| 2. Minimum luminal diameter = Shortest diameter through center point of the lumen. |
| 3. Maximum luminal diameter = Longest diameter through center point of the lumen |
| 4. Lumen eccentricity = Maximum luminal diameter − Minimum luminal diameter/Maximum luminal diameter |
| 5. Lumen area stenosis = Reference lumen CSA − Lesion lumen CSA/Reference lumen CSA |
| 6. Plaque + Media (atheroma) cross section area = EEM CSA − lumen CSA |
| 7. % Plaque area (atheroma /plaque burden) = Plaque + media CSA /EEM CSA |
| 8. Stent CSA = Area bounded by coronary stent |
| 9. Stent symmetry = Maximum stent diameter − Minimum stent diameter/Maximum stent diameter |
| 10. Stent expansion = Min. stent CSA compared with predefined reference segment CSA |
