Results 21 to 30 of about 643,214 (199)

Exploring the Predictors of the Discrepancy Between Quantitative Flow Ratio and Fractional Flow Reserve Measurements

Anatolian Journal of Cardiology, 2023
Background: Quantitative flow ratio is a novel technology for the functional assessment of intermediate coronary stenoses. The authors sought to explore the influence of diabetes mellitus on the application of quantitative flow ratio and predictors of ...
Tianhui Dong, Li Zhou, Xuhe Gong, Longhui Ma, Yutian Bai, Hui Chen   +5 more
doaj   +1 more source

Residual Quantitative Flow Ratio to Estimate Post‐Percutaneous Coronary Intervention Fractional Flow Reserve

Journal of Interventional Cardiology, 2021
Objectives. Quantitative flow ratio (QFR) computes fractional flow reserve (FFR) based on invasive coronary angiography (ICA). Residual QFR estimates post‐percutaneous coronary intervention (PCI) FFR.
Pepijn A. van Diemen, Ruben W. de Winter, Stefan P. Schumacher, Michiel J. Bom, Roel S. Driessen, Henk Everaars, Ruurt A. Jukema, Yvemarie B. Somsen, Lenka Popelkova, Peter M. van de Ven, Albert C. van Rossum, Tim P. van de Hoef, Stefan de Haan, Koen M. Marques, Jorrit S. Lemkes, Yolande Appelman, Alexander Nap, Niels J. Verouden, Maksymilian P. Opolski, Ibrahim Danad, Paul Knaapen   +20 more
doaj   +1 more source

Relation of quantitative flow ratio with transit time coronary artery bypass graft flow measurement

Frontiers in Cardiovascular Medicine, 2022
BackgroundQuantitative flow ratio (QFR) is a new functional index to assess the functional significance of coronary stenosis. While whether there is an association between QFR and transit-time flow measurement (TTFM) parameters of the target coronary ...
Cong Chen, Yang Zhao, Wei Li, Kui Zhang, Haiming Dang, Taoshuai Liu, Yue Song, Jubing Zheng, Ran Dong   +8 more
doaj   +1 more source

Quantitative flow ratio-guided surgical intervention in symptomatic myocardial bridging

Cardiology Journal, 2020
BACKGROUND: Patients with myocardial bridging (MB) are associated with adverse cardiovascular events, but a decision to perform surgical intervention, especially for patients with systolic intermediate stenosis, is a difficult clinical issue.
Quan Qi, Gang Liu, Zhize Yuan, Lili Liu, Shengxian Tu, Qiang Zhao   +5 more
doaj   +1 more source

Reproducibility of quantitative flow ratio: An inter-core laboratory variability study

Cardiology Journal, 2020
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 of QFR when analyzed in independent core laboratories.
Yunxiao Chang, Liwei Chen, Jelmer Westra, Zhongwei Sun, Changdong Guan, Yimin Zhang, Daixin Ding, Bo Xu, Shengxian Tu   +8 more
doaj   +1 more source

Validation of Quantitative Flow Ratio-Derived Virtual Angioplasty with Post-Angioplasty Fractional Flow Reserve—The QIMERA-I Study

Journal of Cardiovascular Development and Disease, 2023
Background: Quantitative flow ratio (QFR) virtual angioplasty with pre-PCI residual QFR showed better results compared with an angiographic approach to assess post-PCI functional results.
Ignacio J. Amat-Santos, Giorgio Marengo, Juan Pablo Sánchez-Luna, Carlos Cortés Villar, Fernando Rivero Crespo, Víctor Alfonso Jiménez Díaz, José María de la Torre Hernández, Armando Pérez de Prado, Manel Sabaté, Ramón López-Palop, José Miguel Vegas Valle, Javier Suárez de Lezo, Clara Fernandez Cordon, Jose Carlos Gonzalez, Mario García-Gómez, Alfredo Redondo, Manuel Carrasco Moraleja, J. Alberto San Román   +17 more
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The role of aortic valve area in the quantitative flow ratio–fractional flow reserve discrepancy in patients with coronary artery disease and severe aortic stenosis [PDF]

Advances in Interventional Cardiology
Artur Dziewierz, Łukasz Rzeszutko, Łukasz Niewiara, Jacek Legutko, Paweł Kleczyński   +4 more
doaj   +2 more sources

Impact of diabetes on coronary physiology evaluated by quantitative flow ratio in patients who underwent percutaneous coronary intervention

Journal of Diabetes Investigation, 2022
Aims/Introduction There are mixed opinions on the influence of diabetes on the prognosis of patients receiving percutaneous coronary intervention (PCI).
Zhen Ye, Qin Chen, Jiaxin Zhong, Long Chen, Lihua Chen, Mingfang Ye, Yuanming Yan, Lianglong Chen, Yukun Luo   +8 more
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Feasibility of Quantitative Flow Ratio Virtual Stenting for Guidance of Serial Coronary Lesions Intervention

Journal of the American Heart Association: Cardiovascular and Cerebrovascular Disease, 2022
Background Coronary physiology measurement in serial coronary lesions with multiple stenoses is challenging. Therefore, we evaluated the feasibility of Murray fractal law‐based quantitative flow ratio (μQFR) virtual stenting for guidance of serial ...
Shaofeng Guan, Qian Gan, Wenzheng Han, Xinrong Zhai, Ming Wang, Yang Chen, Liang Zhang, Tianqi Li, Xifeng Chang, Hongyuan Liu, Weilin Hong, Zehang Li, Shengxian Tu, Xinkai Qu   +13 more
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Comparison of diagnostic accuracy of immediate angiography derived residual quantitative flow ratio after bioresorbable scaffold and drug eluting stent implantation [PDF]

Reviews in Cardiovascular Medicine, 2022
Background: Quantitative flow ratio (QFR) is a novel angiography derived fractional flow reserve (FFR) technique. However, its diagnostic accuracy has only be validated in native coronary lesions but not in vessels after bioresorbable scaffold (BRS ...
Zhengwei Li, Jiachen Zhan, Jia Han, Guosheng Fu, Chongying Jin   +4 more
doaj   +1 more source