Differential predictability for high-risk plaque characteristics between fractional flow reserve and instantaneous wave-free ratio [PDF]
Scientific Reports, 2023 To evaluate the differential associations of high-risk plaque characteristics (HRPC) with resting or hyperemic physiologic indexes (instantaneous wave-free ratio [iFR] or fractional flow reserve [FFR]), a total of 214 vessels from 127 patients with ...
Joo Myung Lee +16 more
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Fractional Flow Reserve and Instantaneous Wave‐Free Ratio Predict Pathological Wall Shear Stress in Coronary Arteries: Implications for Understanding the Pathophysiological Impact of Functionally Significant Coronary Stenoses [PDF]
Journal of the American Heart Association: Cardiovascular and Cerebrovascular Disease, 2022 Background The pathophysiological mechanism behind adverse outcomes associated with ischemia‐inducing epicardial coronary stenoses and microcirculatory dysfunction remains unclear. Wall shear stress (WSS) plays an important role in atherosclerotic plaque
Christopher C. Y. Wong +8 more
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The reasons why fractional flow reserve and instantaneous wave-free ratio are similar using wave separation analysis [PDF]
BMC Cardiovascular Disorders, 2021 Background and objectives Fractional flow reserve (FFR) and instantaneous wave-free ratio (iFR) are the two most commonly used coronary indices of physiological stenosis severity based on pressure. To minimize the effect of wedge pressure (P wedge ), FFR
Soohong Min +3 more
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Fractional Flow Reserve Versus Instantaneous Wave‐Free Ratio in Assessment of Lesion Hemodynamic Significance and Explanation of their Discrepancies. International, Multicenter and Prospective Trial: The FiGARO Study [PDF]
Journal of the American Heart Association: Cardiovascular and Cerebrovascular Disease, 2022 Background The FiGARO (FFR versus iFR in Assessment of Hemodynamic Lesion Significance, and an Explanation of Their Discrepancies) trial is a prospective registry searching for predictors of fractional flow reserve/instantaneous wave‐free ratio (FFR/iFR)
Tomas Kovarnik +23 more
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DFENet: Deep Feature Enhancement Network for Accurate Calculation of Instantaneous Wave-Free Ratio [PDF]
IEEE Journal of Translational Engineering in Health and Medicine, 2020 Accurate iFR calculation can provide important clinical information for intracoronary functional assessment without administration of adenosine, which needs to locate object points in the pressure waveforms: peak, the dichrotic notch and the pressure ...
Jiping Li, Liang Song, Heye Zhang
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Dataset on blood flow and instantaneous wave-free ratio in normal and stenosed coronary arteries [PDF]
Data in Brief, 2020 Instantaneous wave-free ratio (iFR) has been proposed as a hemodynamic parameter that can reliably reflect the blood flow in stenosed coronary arteries. Currently, there are few investigations on the quantitative analysis of iFR in the patients regarding
Haipeng Liu +9 more
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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 [PDF]
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 +7 more
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Comparative analysis of instantaneous wave-free ratio and quantitative real-time myocardial contrast echocardiography for the assessment of myocardial perfusion [PDF]
Frontiers in Cardiovascular Medicine, 2022 Background and hypothesisThe field of coronary artery physiology is developing rapidly and changing the practice of interventional cardiology. A new functional evaluation technique using the instantaneous wave-free ratio (iFR) has become an alternative ...
Li Liang +7 more
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Long‐Term Clinical Outcomes of Nonhyperemic Pressure Ratios: Resting Full‐Cycle Ratio, Diastolic Pressure Ratio, and Instantaneous Wave‐Free Ratio [PDF]
Journal of the American Heart Association: Cardiovascular and Cerebrovascular Disease, 2020 Background Nonhyperemic pressure ratios (NHPRs) such as instantaneous wave‐free ratio, resting full‐cycle ratio, or diastolic pressure ratio have emerged as invasive physiologic indices precluding the need for hyperemic agents.
Joo Myung Lee +17 more
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Diagnostic Agreement of Quantitative Flow Ratio With Fractional Flow Reserve and Instantaneous Wave‐Free Ratio [PDF]
Journal of the American Heart Association: Cardiovascular and Cerebrovascular Disease, 2019 Background Quantitative flow ratio (QFR) has a high diagnostic accuracy in assessing functional stenoses relevance, as judged by fractional flow reserve (FFR). However, its diagnostic performance has not been thoroughly evaluated using instantaneous wave‐
Doyeon Hwang +22 more
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