Results 1 to 10 of about 152,141 (297)

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
doaj   +6 more sources

Understanding Fractional Flow Reserve/Instantaneous Wave‐Free Ratio Discordance Can Provide Coronary Clarity [PDF]

Journal of the American Heart Association: Cardiovascular and Cerebrovascular Disease, 2022
David M. Tehrani, Arnold H. Seto
doaj   +6 more sources

Rate Pressure Products Affect the Relationship between the Fractional Flow Reserve and Instantaneous Wave-Free Ratio [PDF]

Journal of Interventional Cardiology, 2020
The rate pressure product (RPP) is an index of myocardial metabolism that correlates closely with myocardial hemodynamics. The relationship between the RPP and the fractional flow reserve (FFR) and instantaneous wave-free ratio (iFR) is not known.
Suguru Ebihara, Hisao Otsuki, Hiroyuki Arashi, Junichi Yamaguchi, Nobuhisa Hagiwara   +4 more
doaj   +4 more sources

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, Rebecca Rylance, Troels Yndigegn, Sasha Koul, Ole Fröbert, Evald H. Christiansen, David Erlinge, Matthias Götberg   +7 more
doaj   +3 more sources

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, Ki Hong Choi, Joo Myung Lee, Hernán Mejía‐Rentería, Jihoon Kim, Jonghanne Park, Tae‐Min Rhee, Ki‐Hyun Jeon, Hyun‐Jong Lee, Hyun Kuk Kim, Taek Kyu Park, Jeong Hoon Yang, Young Bin Song, Eun‐Seok Shin, Chang‐Wook Nam, Jae‐Jin Kwak, Joon‐Hyung Doh, Joo‐Yong Hahn, Jin‐Ho Choi, Seung‐Hyuk Choi, Javier Escaned, Bon‐Kwon Koo, Hyeon‐Cheol Gwon   +22 more
doaj   +4 more sources

Instantaneous wave-free ratio guided multivessel revascularisation during percutaneous coronary intervention for acute myocardial infarction: study protocol of the randomised controlled iMODERN trial [PDF]

BMJ Open, 2021
Introduction Recent randomised clinical trials showed benefit of non-culprit lesion revascularisation in ST-elevation myocardial infarction (STEMI) patients. However, it remains unclear whether revascularisation should be performed at the index procedure
Jan J Piek, Javier Escaned, Niels van Royen, Rasha Al-Lamee, Justin Davies, Michael Maeng, Marcel G W Dijkgraaf, Robin Nijveldt, Troels Thim, Casper W H Beijnink, Dirk Jan van der Heijden, Igor Klem, Jacqueline L Vos, Yvonne Koop, Marcel A M Beijk, Raymond J Kim, Luis Raposo, Sérgio B Baptista   +17 more
doaj   +4 more sources

Dobutamine stress echocardiography after positive CCTA: diagnostic performance using fractional flow reserve and instantaneous wave-free ratio as reference standards [PDF]

Open Heart
Aims To assess the diagnostic accuracy of dobutamine stress echocardiography (DSE) in symptomatic patients with a low to intermediate pretest probability of obstructive coronary artery disease (CAD) and a positive coronary CT angiography (CCTA).Methods ...
Rune Wiseth, Svend Aakhus, Espen Holte, Anders Tjellaug Bråten   +3 more
doaj   +4 more sources

Myocardial perfusion imaging by single-photon emission tomography (MPI SPECT) versus Instantaneous wave-free ratio (IFR) for assessment of functional significance of intermediate coronary artery lesions [PDF]

The Egyptian Heart Journal, 2019
Background The aim of our work was to compare the myocardial perfusion imaging by single-photon emission tomography (MPI-SPECT) as a non-invasive, relatively non-expensive test versus the instantaneous wave-free ratio (IFR) for the evaluation of ...
Osama Ahmed Amin, Yasser Ahmed Abdel Hady, Mohammad Ahmad Nour El-Din Esmail   +2 more
doaj   +2 more sources

Measurement of Instantaneous Wave-free Ratio through a Diagnostic Catheter: Comparison of the Results between 4Fr and 5Fr

Artery Research, 2020
Background: Clinical evidence of coronary pressure assessment through a diagnostic catheter is limited. The aim of this study was to assess the difference, safety, and rate of successful measurement of Instantaneous Wave-free Ratio (iFR) through 4Fr and ...
Shinichiro Masuda, Ryota Uemura, Yoshiyuki Saiki, Tatsuo Haraki, Takeshi Lee   +4 more
doaj   +2 more sources

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, Doosup Shin, Seung Hun Lee, Ki Hong Choi, Sung Mok Kim, Eun Ju Chun, Kwan Yong Lee, Doyeon Hwang, Sung Gyun Ahn, Adam J. Brown, Hernán Mejía-Rentería, Adrien Lefieux, David Molony, Kiyuk Chang, Tsunekazu Kakuta, Javier Escaned, Habib Samady   +16 more
doaj   +2 more sources