Results 241 to 250 of about 175,351 (257)

Validation of the resting full-cycle ratio and diastolic pressure ratio through myocardial perfusion imaging with [15O]H2O positron emission tomography

European Heart Journal, 2023
Abstract Background Fractional flow reserve (FFR) and instantaneous wave-free ratio (iFR) are invasive techniques used to evaluate the hemodynamic significance of coronary artery stenosis. These methods have been validated through perfusion imaging techniques and clinical trials. However, new invasive
J Dahdal, F Bakker, J Svanerud, I Danad, R Driessen, P Raijmakers, H Harms, A Lammertsma, T Van De Hoef, Y Appelman, N Van Royen, P Knaapen, G De Waard   +12 more
openaire   +1 more source

The role of gender in resting full-cycle ratio (RFR) guided coronary revascularization

International Journal of Cardiology
Gender-based differences in clinical outcomes of patients undergoing fractional flow reserved (FFR) guided coronary revascularization is well documented. This study aimed to compare resting full-cycle ratio (RFR) values between men and women and whether this translated into difference in clinical outcomes in patients who underwent RFR-guided coronary ...
Mina, Ghobrial, Bilal, Bawamia, Timothy, Cartlidge, Ian, Purcell, Alan, Bagnall, Mohamed, Farag, Mohammad, Alkhalil   +6 more
openaire   +2 more sources

Comparison of quantitative flow ratio (QFR) and instantaneous wave-free ratio (iFR) or resting full-cycle ratio (RFR) during daily routine in the catheterization laboratory

European Heart Journal, 2022
Abstract Background The prognosis of patients with coronary artery disease (CAD) depends strongly on the hemodynamic relevance of the stenosis. The gold standard is the invasive evaluation of the stenosis using Fractional Flow Reserve (FFR), instantaneous wave-free ratio (iFR) or Resting Full-Cycle ...
M Antoniadis, J Stader, M Ussat, R Wachter, D Jurisch, D Lavall, M Metze, M Neef, P Baum, C Spies, U Laufs, K Lenk   +11 more
openaire   +1 more source

Real world validation of the nonhyperemic index of coronary artery stenosis severity—Resting full‐cycle ratio—RE‐VALIDATE

Catheterization and Cardiovascular Interventions, 2019
AbstractObjectiveThe primary objective was to demonstrate diagnostic equivalence between RFR and iFR in clinical practice.BackgroundThe instantaneous wave‐free ratio (iFR), a nonhyperemic pressure ratio (NHPR), has been shown to be noninferior to fractional flow reserve (FFR) in determining coronary artery stenosis severity in intermediate lesions ...
Gautam Kumar, Rupak Desai, Ankita Gore, Hussein Rahim, Akiko Maehara, Mitsuaki Matsumura, Ajay Kirtane, Allen Jeremias, Ziad Ali   +8 more
openaire   +2 more sources

Nutrition Status May be Related to Discordance of the Resting Full‐Cycle Ratio and Fractional Flow Reserve

Catheterization and Cardiovascular Interventions
ABSTRACT Background Clinical guidelines recommend using both hyperemic (fractional flow reserve [FFR]) and non‐hyperemic (instantaneous wave‐free ratio or resting full‐cycle ratio [RFR]) methods to evaluate coronary artery stenoses in patients with coronary artery disease (CAD).
Tomohiro Honda, Hiroaki Kawano, Ryohei Akashi, Seiji Koga, Takahiro Muroya, Satoshi Ikeda, Koji Maemura   +6 more
openaire   +1 more source

Paradoxical relationship between resting full-cycle ratio and fractional flow reserve

Journal of Cardiology
Yuya Tanabe, Yuichi Saito, Shunsuke Nakamura, Tatsuro Yamazaki, Hideki Kitahara, Yoshio Kobayashi   +5 more
openaire   +1 more source

Vergleich zwischen Resting Full-Cycle Ratio und CT-basierter fraktioneller Flussreserve bei Patienten mit schwerer Aortenklappenstenose: Vorläufige Ergebnisse

RöFo - Fortschritte auf dem Gebiet der Röntgenstrahlen und der bildgebenden Verfahren, 2022
C M Langenbach, I Breidert, K Klein, D Maintz, M Adam, H Wienemann   +5 more
openaire   +1 more source

Prospective validation and comparison of new indexes for the assessment of coronary stenosis: resting full-cycle and quantitative flow ratio

Revista Española de Cardiología (English Edition), 2021
Carlos, Cortés, Fernando, Rivero, Enrique, Gutiérrez-Ibañes, Álvaro, Aparisi, José A, San Román, Ignacio J, Amat-Santos   +5 more
openaire   +2 more sources

Resting Full Cycle Ratio (RFR) and Instantaneous Wave-Free Ratio (iFR): Simultaneous Measurements for Assessment of Coronary Stenosis

Cardiovascular Revascularization Medicine, 2019
Grigoris V. Karamasis, Thomas R. Keeble, Andreas S. Kalogeropoulos, John R. Davies, Gerald J. Clesham   +4 more
openaire   +1 more source

Validation of a novel non-hyperaemic index of coronary artery stenosis severity: the Resting Full-cycle Ratio (VALIDATE RFR) study

EuroIntervention, 2018
Akiko Maehara, Aaron Crowley, Barry Hennigan   +2 more
exaly