Objectives A method named computed tomography angiography-derived fractional flow
reserve (FFR CT) is an alternative method for detecting hemodynamically significant …

Fractional flow reserve (FFR) is an invasive procedure used during coronary angiography to
determine the functional significance of coronary stenoses. Its use is particularly helpful in …

Objectives: This study sought to evaluate the incidence and causes of an abnormal
instantaneous wave-free ratio (iFR) after angiographically successful percutaneous …

Aims: The aim of this study was to validate novel software to calculate vessel fractional flow
reserve (vFFR) based on 3D-QCA and to assess inter-observer variability in patients who …

Aims Conventional fractional flow reserve (FFR) is measured invasively using a coronary
guidewire equipped with a pressure sensor. A non-invasive derived FFR would eliminate …

Objectives The aim of this study was to identify the post–percutaneous coronary intervention
(PCI) target value of instantaneous wave-free ratio (iFR) that would best discriminate clinical …

CT fractional flow reserve (FFRCT) is a physiologic simulation technique that models
coronary flow from routine coronary CT angiography (CTA). To evaluate lesion-specific …

Aims The instantaneous wave-free ratio (iFR) and whole-cycle Pd/Pa investigate coronary
physiology during non-hyperaemic conditions. To test for unique physiologic properties of …

Background Assessing index of microcirculatory resistance (IMR) is customarily performed
using intracoronary wires fitted with sensors by at least 3 intracoronary injections of 3 to 4 …

Objective The primary objective was to demonstrate diagnostic equivalence between RFR
and iFR in clinical practice. Background The instantaneous wave‐free ratio (iFR), a …