Results 11 to 20 of about 8,717 (246)

Evaluation of Myocardial Ischemia Using Coronary Computed Tomography Angiography in Patients with Stable Angina

대한영상의학회지, 2020
Assessment of myocardial ischemia in patients with stable angina is important in deciding whether to treat coronary artery disease and in predicting clinical outcome.
Sung Min Ko
doaj   +1 more source

Myocardial Perfusion and Coronary Physiology Assessment of Microvascular Dysfunction in Patients Undergoing Transcatheter Aortic Valve Implantation—Rationale and Design

Biomimetics, 2022
The prevalence of coronary artery disease (CAD) in patients with severe aortic stenosis (AS) is 30–68%. Nevertheless, there is still not enough evidence to use invasive assessment of lesion severity, because the hemodynamic milieu of AS may impact the ...
M. M. Dobrolinska, P. Gąsior, A. Błach, R. Gocoł, D. Hudziak, W. Wojakowski   +5 more
doaj   +1 more source

Validation of Collateral Fractional Flow Reserve by Myocardial Perfusion Imaging [PDF]

Circulation, 2002
Background — Collateral fractional flow reserve (FFR coll ) is an index to quantify collateral blood flow, derived from coronary pressure measurements.
Shuusaku Miyata, Hitoshi Matsuo, Masaaki Tomita, Hisayoshi Fujiwara, Sachiro Watanabe, Tomonori Segawa, Shinichiro Tanaka, Yukihiko Matsuno, Tohru Kadosaki, Takahiko Yamaki   +9 more
openaire   +3 more sources

Effect of Varying Hemodynamic and Vascular Conditions on Fractional Flow Reserve: An In Vitro Study

Journal of the American Heart Association: Cardiovascular and Cerebrovascular Disease, 2016
BackgroundThe aim of this study was to investigate the impact of varying hemodynamic conditions on fractional flow reserve (ratio of pressure distal [Pd] and proximal [Pa] to stenosis under hyperemia) in an in vitro setting.
Kranthi K. Kolli, James K. Min, Seongmin Ha, Hilary Soohoo, Guanglei Xiong   +4 more
doaj   +1 more source

Coronary Microcirculation Downstream Non‐Infarct‐Related Arteries in the Subacute Phase of Myocardial Infarction: Implications for Physiology‐Guided Revascularization

Journal of the American Heart Association: Cardiovascular and Cerebrovascular Disease, 2019
Background Concerns exist about reliability of pressure‐wire‐guided coronary revascularization of non‐infarct‐related arteries (non‐IRA). We investigated whether physiological assessment of non‐IRA during the subacute phase of myocardial infarction might
Hernán Mejía‐Rentería, Joo Myung Lee, Nina W. van der Hoeven, Nieves Gonzalo, Pilar Jiménez‐Quevedo, Luis Nombela‐Franco, Iván J. Núñez‐Gil, Pablo Salinas, María Del Trigo, Enrico Cerrato, Niels van Royen, Paul Knaapen, Bon‐Kwon Koo, Carlos Macaya, Antonio Fernández‐Ortiz, Javier Escaned   +15 more
doaj   +1 more source

Fractional Flow Reserve–Guided Multivessel Angioplasty in Myocardial Infarction

New England Journal of Medicine, 2017
In patients with ST-segment elevation myocardial infarction (STEMI), the use of percutaneous coronary intervention (PCI) to restore blood flow in an infarct-related coronary artery improves outcomes. The use of PCI in non-infarct-related coronary arteries remains controversial.We randomly assigned 885 patients with STEMI and multivessel disease who had
Lior Bibas, George Thanassoulis
openaire   +9 more sources

Myocardial perfusion MRI compared to fractional flow reserve: a meta-analysis [PDF]

Journal of Cardiovascular Magnetic Resonance, 2015
Methods This meta-analysis was performed in adherence to the PRISMA statement. Two reviewers systematically searched PubMed, EMBASE and Web of Science, using predefined inclusion and exclusion criteria. Only studies using invasive coronary angiography combined with FFR for assessment of intermediate coronary stenoses were included.
Takx, Richard, Blomberg, Bjorn A., de Jong, Pim A., Leiner, Tim   +3 more
openaire   +3 more sources

Three-Dimensional Angiographic Characteristics versus Functional Stenosis Severity in Fractional and Coronary Flow Reserve Discordance: A DEFINE FLOW Sub Study

Diagnostics, 2022
Background: Coronary angiography alone is insufficient to identify lesions associated with myocardial ischemia that may benefit from revascularization.
Valerie Stegehuis, Jelmer Westra, Coen Boerhout, Martin Sejr-Hansen, Ashkan Eftekhari, Hernan Mejía-Renteria, Maribel Cambero-Madera, Niels Van Royen, Hitoshi Matsuo, Masafumi Nakayama, Maria Siebes, Evald Høj Christiansen, Tim Van de Hoef, Jan Piek   +13 more
doaj   +1 more source

Fractional Flow Reserve or Coronary Flow Reserve for the Assessment of Myocardial Perfusion [PDF]

Current Cardiology Reports, 2018
Accumulating evidence exists for the value of coronary physiology for clinical decision-making in ischemic heart disease (IHD). The most frequently used pressure-derived index to assess stenosis severity, the fractional flow reserve (FFR), has long been considered the gold standard for this purpose, despite the fact that the FFR assesses solely ...
Tim P. van de Hoef, Jan J. Piek, Valérie E. Stegehuis, Gilbert W. M. Wijntjens   +3 more
openaire   +3 more sources

Effect of the ratio of vessel-specific volume to fractional myocardial mass on fractional flow reserve

Experimental Biology and Medicine, 2021
This study aimed to examine whether the ratio of vessel-specific coronary arterial lumen volume to the fraction of myocardial mass (VR/MR) affects myocardial ischemia. We proposed a calculation method for VR/MR, and compared the ratio of total epicardial coronary arterial lumen volume to left ventricular myocardial mass (V/M) with VR/MR in predicting ...
Jincheng Liu, Bao Li, Junling Ma, Xue Wang, Liyuan Zhang, Boyan Mao, Youjun Liu   +6 more
openaire   +2 more sources