There are multiple definitions:
myocardial flow reserve [index](English)
- ratio of stress to rest myocardial blood flow. An established non-invasive quantitative marker of cardiovascular risk and helps to overcome the limitations of relative single photon emission computed tomography perfusion imaging, including the evaluation of individuals with multivessel coronary artery disease, diffuse atherosclerosis, and/or coronary microvascular dysfunction
- CAD, CFR, CZT, FFR, IB, MACE, MBF, MPI, MBFR, OSEM, PET, vFAI
- Coronary circulation, Ratio-based metric, Stress (test), Atherosclerosis /atherogenic
- https://pubmed.…h.gov/32221588/
- https://doi.org…3/ehjci/jeaa305
- https://doi.org…GING.122.013987
- https://doi.org…naha.125.078816
middle-fluorescence reticulocyte(English)
- ratio that measures medium-maturity immature red blood cells circulating in the blood based on their RNA content
- LFR, CBC, HFR, RMI
- Erythrocyte, Fluorescence, Ratio-based metric
- https://pubmed.…h.gov/12956442/
- https://pubmed.…ih.gov/9054713/
mean firing rate(English)
- the average number of electrical impulses (spikes or action potentials) that a neuron or a network of neurons produces per unit of time
- ACLR, CAR, dEMG, EMG, MU, MUAP, MVIC, RT
- Electrophysiology, Myocyte / muscle, Neurons
- https://doi.org…717/peerj.16261