| CMR features | Aneurysm | Pseudoaneurysm |
| Anatomic localization | Apical or anterior | Posterior or inferior |
| Neck | Wide | Narrow |
| Neck/mounth ratio | 0.9 - 1 | 0.25 - 0.5 |
| Contractility | Dyskinesia | Akinesia |
| Appearance in viability imaging | Enhancement in the wall of sac corresponding to scarred myocardium | Enhancement of overlying pericardium |