| PET | peak ejection time; polyethylene terphthalate; poor exercise tolerance; positron emission tomography... |
|---|---|
| REF | ejection fraction at rest; referred; refused; renal erythropoietic factor |
| REFI | regional ejection fraction image |
| RVEF | right ventricular ejection fraction; right ventricular end-flow |
| RVET | right ventricular ejection time |