There are multiple definitions:

1. reduced ejection fraction(English)

   • also denoted as rEF
   • ARB, BB, CI, CKD, DM, EF, ACEi, eGFR, HFrEF, HR, MRA, SBP, WRF, PEF
   • Cardiology, Nephrology
   • https://doi.org…acc.2013.04.086

2. regional ejection fraction(English)

   • CAD, CVG, ECG, GAPET, LVEF, LVGEF, PET
   • Cardiology, Medical imaging
   • https://doi.org…199806000-00005