Ischemic Myocardial Burden Subtended by Computed Tomography-Derived Fractional Flow Reserve (APPROACHFFRCT): An Exploratory Analysis on Diagnostic Performance.

Fractional flow reserve derived from coronary computed tomography angiography (FFRCT) is an emerging noninvasive modality that accurately identifies ischemic vessels ([1][1]), although recent evidence suggests that gray-zone FFRCT values between 0.70 to 0.80 are associated with only modest