Fractional flow reserve
RATIO OR PERCENTAGE OF MAXIMUM BLOOD FLOW TO THE MYOCARDIUM WITH CORONARY STENOSIS PRESENT, TO THE MAXIMUM EQUIVALENT BLOOD FLOW WITHOUT STENOSIS
Fractional Flow Reserve (FFR); Fractional Flow Reserve; Myocardial fractional flow reserve
Fractional flow reserve (FFR) is a diagnostic technique used in coronary catheterization. FFR measures pressure differences across a coronary artery stenosis (narrowing, usually due to atherosclerosis) to determine the likelihood that the stenosis impedes oxygen delivery to the heart muscle (myocardial ischemia).