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

Background: Quantitative flow ratio (QFR) is a novel angiography-based method for deriving
fractional flow reserve (FFR) without pressure wire or induction of hyperemia. The accuracy …

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 …

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 …

Background This study aimed to simultaneously investigate diagnostic performance and
limitation of quantitative flow reserve (QFR) for assessing functionally significant coronary …

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

Background Fractional flow reserve (FFR) and instantaneous wave‐free ratio (iFR) disagree
in about 20% of intermediate coronary lesions. As the physiological pattern of coronary …

Background Quantitative flow ratio (QFR) is a novel modality for physiological lesion
assessment based on 3‐dimensional vessel reconstructions and contrast flow velocity …

Background Quantitative flow ratio (QFR) has recently been introduced as a novel, less‐
invasive, adenosine‐free measure for functional coronary lesion assessment. Whether …