There are multiple definitions:

1. myocardial blood flow(English)

   • CFR, FFR, MFR, MGU, MVO2, PET, MPI, hMBF, IB, sMBF
   • Coronary circulation, Medical imaging, Hemodynamics, Diagnostics
   • https://doi.org…3/ehjci/jeaa305

2. midband fit(English)

   • DUE, FUS
   • Signal analysis