Results 1 to 10 of about 43,677 (207)

A prospective multicenter validation study for a novel angiography-derived physiological assessment software: Rationale and design of the radiographic imaging validation and evaluation for Angio-iFR (ReVEAL iFR) study

American Heart Journal, 2021
BACKGROUND Angiography-derived physiological assessment of coronary lesions has emerged as an alternative to wire-based assessment aiming at less-invasiveness and shorter procedural time as well as cost effectiveness in physiology-guided decision making.
Norihiro Kogame, Jan Piek, Manesh Patel   +2 more
exaly   +2 more sources

Comparison of Instantaneous Wave-Free Ratio (iFR) and Fractional Flow Reserve (FFR) with respect to Their Sensitivities to Cardiovascular Factors: A Computational Model-Based Study

Journal of Interventional Cardiology, 2020
While coronary revascularization strategies guided by instantaneous wave-free ratio (iFR) are, in general, noninferior to those guided by fractional flow reserve (FFR) with respect to the rate of major adverse cardiac events at one-year follow-up in ...
Xinyang Ge, Youjun Liu, Zhaofang Yin, Shengxian Tu, Yuqi Fan, Yuri Vassilevski, Sergey Simakov, Fuyou Liang   +7 more
doaj   +2 more sources

Computational instantaneous wave‐free ratio (IFR) for patient‐specific coronary artery stenoses using 1D network models

International Journal for Numerical Methods in Biomedical Engineering, 2019
In this work, we estimate the diagnostic threshold of the instantaneous wave‐free ratio (iFR) through the use of a one‐dimensional haemodynamic framework.
Jason Matthew Carson, Perumal Nithiarasu   +1 more
exaly   +2 more sources

Reliability of Instantaneous Wave-Free Ratio (iFR) for the Evaluation of Left Main Coronary Artery Lesions

Journal of Clinical Medicine, 2019
The assessment of the left main coronary artery (LMCA) by coronary angiography has several limitations. The fractional flow reserve (FFR) is useful for the functional evaluation of LMCA stenoses.
Annalisa Mongiardo
exaly   +2 more sources

Clinical Outcomes Following Discordance Between Fractional Flow Reserve and Instantaneous Wave-Free Ratio in Deferred Coronary Lesions: A Systematic Review and Meta-Analysis [PDF]

Reviews in Cardiovascular Medicine
Background: Current guidelines recommend the use of either fractional flow reserve (FFR) or instantaneous wave-free ratio (iFR) for assessing intermediate coronary stenoses.
Spyridon Graidis, Filippos Timpilis, Georgia Xygka, Asimenia Katsea, Antonios Karanasos, Grigorios Tsigkas, Athanasios Moulias, Virginia Mplani, Periklis Davlouros, Michail Papafaklis   +9 more
doaj   +2 more sources

Five-year major cardiovascular events are increased when coronary revascularization is guided by instantaneous wave-free ratio compared to fractional flow reserve: a pooled analysis of iFR-SWEDEHEART and DEFINE-FLAIR trials.

European Heart Journal, 2023
BACKGROUND AND AIMS Guidelines recommend revascularization of intermediate epicardial artery stenosis to be guided by evidence of ischemia. Fractional flow reserve (FFR) and instantaneous wave-free ratio (iFR) are equally recommended.
A. Eftekhari, E. Holck, J. Westra, N. Olsen, N. Bruun, L. Jensen, T. Engstrøm, E. Christiansen   +7 more
semanticscholar   +1 more source

Clinical Outcome of Revascularization Deferral With Instantaneous Wave‐Free Ratio and Fractional Flow Reserve: A 5‐Year Follow‐Up Substudy From the iFR‐SWEDEHEART Trial

Journal of the American Heart Association : Cardiovascular and Cerebrovascular Disease, 2023
Background Although physiology‐based assessment of coronary artery stenosis using instantaneous wave‐free ratio (iFR) and fractional flow reserve (FFR) are established methods of guiding coronary revascularization, its clinical outcome in long‐term ...
Karolina Berntorp, R. Rylance, T. Yndigegn, S. Koul, O. Fröbert, E. Christiansen, D. Erlinge, M. Götberg   +7 more
semanticscholar   +1 more source

Tracking the Rise of Robots: The IFR Database

Jahrbücher für Nationalökonomie und Statistik, 2022
We present and analyze the dataset on the international distribution of industrial robots by country, industry, and application provided by the International Federation of Robotics (IFR) since 1993. After describing the IFR we point out specificities and
Anne Jurkat, R. Klump, Florian Schneider
semanticscholar   +1 more source

Fire Performance of Intumescent Flame Retardant/Nanosilica/Thermoplastic Polyurethane Composite: A Study on Synergism [PDF]

علوم و تکنولوژی پلیمر, 2023
Hypothesis: The aim of this research is to improve the fire behavior of thermoplastic polyurethane (TPU) using an intumescent flame retardant system (IFR) and nanosilica as a synergistic agent Methods: A three-component IFR system consisting of ammonium ...
Leila Taghi Akbari, Mohammad Reza Naimi - Jamal, Shervin Ahmadi   +2 more
doaj   +1 more source

The instantaneous wave-free ratio (iFR) for evaluation of non-culprit lesions in patients with acute coronary syndrome and multivessel disease

International Journal of Cardiology, 2015
Gianluca Caiazzo
exaly   +2 more sources