Background Quantitative flow ratio (QFR) is a novel angiography-derived index aimed to
assess the functional relevance of coronary stenoses without pressure wires and adenosine …

Background The angiographic percent diameter stenosis (% DS) do not assess the
physiological significance of epicardial coronary stenosis. The currently practised …

Aims To evaluate diagnostic accuracy of quantitative flow ratio (QFR). A novel method was
used for non-invasive functional assessment of intermediate coronary lesions. Fractional …

Quantitative flow ratio (QFR) is an image-based fractional flow reserve (FFR) computed by
three-dimensional quantitative coronary angiography and estimated flow velocity. Several …

BACKGROUND: Quantitative flow ratio derived from computed tomography angiography
(CT-QFR) and invasive coronary angiography (Murray law–based quantitative flow ratio …

Background: Quantitative flow ratio (QFR) is a newly developed image-based index for
estimating fractional flow reserve (FFR). Methods and Results: We analyzed 151 coronary …

Background Measurement of the contrast-flow quantitative flow ratio (cQFR) is a novel
method for rapid computational estimation of fractional flow reserve (FFR). Discordance …

Background: Quantitative flow ratio (QFR) is a novel approach to derive fractional flow
reserve (FFR) from coronary angiography. This study sought to evaluate the reproducibility …

Background Quantitative flow ratio (QFR) is a novel, adenosine-free method for functional
coronary lesion interrogation, which is based on 3-dimensional quantitative coronary …

Background Quantitative flow ratio (QFR) has a high diagnostic accuracy in assessing
functional stenoses relevance, as judged by fractional flow reserve (FFR). However, its …