Results 21 to 30 of about 3,798,071 (209)

VERMONT μQFR: Diagnostic Accuracy of Murray Law-Based 2D-μQFR Compared to 3D-μQFR and vFFR. [PDF]

open access: yesCatheter Cardiovasc Interv
ABSTRACT Background Murray law‐based quantitative flow ratio (μQFR) is an angiography‐derived physiological index that utilizes a single angiographic projection with artificial intelligence‐guided vessel segmentation. Aims To evaluate the diagnostic accuracy and time efficacy of 2D‐μQFR against wire‐based fractional flow reserve (FFR ≤ 0.80), compare ...
Akrawi D   +16 more
europepmc   +2 more sources

Coronary lesion progression as assessed by fractional flow reserve (FFR) and angiography [PDF]

open access: yesEuroIntervention, 2018
The aim of this study was to explore the evolution of coronary lesions which had repeated physiologic evaluation by FFR as an endpoint, describe the clinical significance of longitudinal FFR change (ΔFFR=FFRfollow-up-FFRbaseline) and its correlation with angiographic indices, and identify predictors of FFRfollow-up.A retrospective, single-centre ...
Xaplanteris, Panagiotis   +7 more
openaire   +4 more sources

Three-Dimensional Angiographic Characteristics versus Functional Stenosis Severity in Fractional and Coronary Flow Reserve Discordance: A DEFINE FLOW Sub Study

open access: yesDiagnostics, 2022
Background: Coronary angiography alone is insufficient to identify lesions associated with myocardial ischemia that may benefit from revascularization.
Valerie Stegehuis   +13 more
doaj   +1 more source

Ability of FFR-CT to detect the absence of hemodynamically significant lesions in patients with high-risk NSTE-ACS admitted in the emergency department with chest pain, study design and rationale

open access: yesInternational Journal of Cardiology: Heart & Vasculature, 2020
Background: In the era of High-sensitive troponin (hs-Tn), up to 50% of patients with a mild increase of hs-Tn will finally have a normal invasive coronary angiogram.
David Meier   +8 more
doaj   +1 more source

Fractional flow reserve in patients with reduced ejection fraction [PDF]

open access: yes, 2020
Fractional flow reserve (FFR) has never been investigated in patients with reduced ejection fraction and associated coronary artery disease (CAD).
Franco, Danilo   +37 more
core   +1 more source

Fractional flow reserve: current status [PDF]

open access: yesКардіохірургія та інтервенційна кардіологія, 2019
Since the introduction of the fractional flow reserve (FFR) into clinical practice more than 20 years ago, revascularization controlled by the measurement of physiological parameters has become routine.
A.V. Khokhlov, M.V. Shymanko, M.V. Stan
doaj   +1 more source

Estimating the accuracy of a reduced‐order model for the calculation of fractional flow reserve (FFR) [PDF]

open access: yesInternational Journal for Numerical Methods in Biomedical Engineering, 2017
AbstractImage‐based noninvasive fractional flow reserve (FFR) is an emergent approach to determine the functional relevance of coronary stenoses. The present work aimed to determine the feasibility of using a method based on coronary computed tomography angiography (CCTA) and reduced‐order models (0D‐1D) for the evaluation of coronary stenoses.
Etienne Boileau   +6 more
openaire   +4 more sources

Approach for artificial intelligence based virtual post-percutaneous coronary intervention fractional flow reserve (FFR) computation.

open access: yes, 2022
Approach for artificial intelligence based virtual post-percutaneous coronary intervention fractional flow reserve (FFR) computation.
Lucian Calmac (9900433)   +10 more
core   +1 more source

Diagnostic performance of wireless fractional flow reserve: a meta-analysis

open access: yes, 2021
Introduction The aim of this study was to evaluate diagnostic performance of wireless fractional flow reserve (FFR) used in patients with coronary artery disease (CAD).
Wen Pan, Qing-Jun Liu
core   +1 more source

Influence of reconstruction kernels on the accuracy of CT-derived fractional flow reserve [PDF]

open access: yes, 2021
Objectives!#!We evaluated the influence of image reconstruction kernels on the diagnostic accuracy of CT-derived fractional flow reserve (FFR!##!Methods!#!Sixty-nine patients, in whom coronary CT angiography was performed and who were further referred ...
Marwan, Mohamed   +13 more
core   +1 more source

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