Results 31 to 40 of about 19,908 (140)

Collateral donor artery physiology and the influence of a chronic total occlusion on fractional flow reserve [PDF]

, 2015
Background— The presence of a concomitant chronic total coronary occlusion (CTO) and a large collateral contribution might alter the fractional flow reserve (FFR) of an interrogated vessel, rendering the FFR unreliable at predicting ischemia should the ...
Alahmar, A., Alahmar, Albert, Alamgir, F., Alamgir, Farquad, Cunnington, Michael S., Davies, Justin E., Hoye, Angela, Ladwiniec, A., Ladwiniec, Andrew, Mather, Adam N., Nijjer, Sukhjinder S., Oliver, Richard M., Rossington, J., Rossington, Jennifer, Thackray, S., Thackray, Simon   +15 more
core   +1 more source

Diabetes does not impact the diagnostic performance of contrast-based fractional flow reserve: insights from the CONTRAST study [PDF]

, 2017
Background: Adenosine-free coronary pressure wire metrics have been proposed to test the functional significance of coronary artery lesions, but it is unexplored whether their diagnostic performance might be altered in patients with diabetes. Methods:
Adjedj, Julien, Barbato, Emanuele, Esposito, Giovanni, Fearon, William, Ferrone, Marco, Gargiulo, Giuseppe, Hennigan, Barry, Jeremias, Allen, Johnson, Nils, Matsumura, Mitsuaki, On behalf of the CONTRST Study Investigators, Stabile, Eugenio, Trimarco, Bruno, Zimmermann, Frederik   +13 more
core   +2 more sources

The Impact of Myocardial Bridging on Fractional Flow Reserve

, 2022
Arterial stenosis is a problem of immediate significance, as cardiovascular disease is the number one leading cause of death worldwide. Fractional flow reserve (FFR) was proposed to evaluate the functional severity of coronary plaque-induced stenosis more accurately. FFR relies on invasive pressure measurements, while computational fluid dynamics (CFD)
openaire   +2 more sources

Stability of Diluted Adenosine Solutions in Polyolefin Infusion Bags [PDF]

, 2013
Background Intravenous or intracoronary adenosine is used in the cardiac catherization lab to achieve maximal coronary blood flow and determine fractional flow reserve.
Almagambetova, Elise, Blais, Danielle M., Hutchinson, David, Zhao, Fang   +3 more
core   +2 more sources

Effect of Plaque Burden and Morphology on Myocardial Blood Flow and Fractional Flow Reserve

Journal of the American College of Cardiology, 2018
Atherosclerotic plaque characteristics may affect downstream myocardial perfusion, as well as coronary lesion severity.This study sought to evaluate the association between quantitative plaque burden and plaque morphology obtained using coronary computed tomography angiography (CTA) and quantitative myocardial perfusion obtained using [15O]H2O positron
Driessen, R.S., Stuijfzand, W.J., Raijmakers, P.G., Danad, I., Min, J.K., Leipsic, J.A., Ahmadi, A., Narula, J., Ven, P.M. van de, Huisman, M.C., Lammertsma, A.A., Rossum, A.C. van, Royen, N. van, Knaapen, P.   +13 more
openaire   +4 more sources

Beam hardening artifact reduction using dual energy computed tomography: implications for myocardial perfusion studies [PDF]

, 2015
Background: Myocardial perfusion computed tomography (CTP) using conventional single energy (SE) imaging is influenced by the presence of beam hardening artifacts (BHA), occasionally resembling perfusion defects and commonly observed at the left ...
Capunay, Carlos, Carrascosa, Patricia, Cipriano, Silvia, Cury, Ricardo C., De Zan, Macarena, Deviggiano, Alejandro, Rodriguez Granillo, Gaston Alfredo   +6 more
core   +1 more source

Fractional flow reserve versus angiography for guidance of PCI in patients with multivessel coronary artery disease (FAME): 5-year follow-up of a randomised controlled trial [PDF]

, 2015
In the Fractional Flow Reserve Versus Angiography for Multivessel Evaluation (FAME) study, fractional flow reserve (FFR)-guided percutaneous coronary intervention (PCI) improved outcome compared with angiography-guided PCI for up to 2 years of follow-up.
Barbato, Emanuele, Baumbach, Andreas, De Bruyne, Bernard, Engstrøm, Thomas, Fearon, William F, Klauss, Volker, Maccarthy, Philip A, Manoharan, Ganesh, Oldroyd, Keith G, Pijls, Nico H J, Tonino, Pim A L, van Nunen, Lokien X, Van't Veer, Marcel, Ver Lee, Peter N, Zimmermann, Frederik M   +14 more
core   +1 more source

Rationale and design of the Clinical Evaluation of Magnetic Resonance Imaging in Coronary heart disease 2 trial (CE-MARC 2): a prospective, multicenter, randomized trial of diagnostic strategies in suspected coronary heart disease [PDF]

, 2015
Background: A number of investigative strategies exist for the diagnosis of coronary heart disease (CHD). Despite the widespread availability of noninvasive imaging, invasive angiography is commonly used early in the diagnostic pathway.
Berry, Colin, Bijsterveld, Petra, Brown, Julia, Everett, Colin C., Greenwood, John P., McCann, Gerry P., Plein, Sven, Ripley, David P., Sculpher, Mark, Walker, Simon   +9 more
core   +1 more source

Diagnostic value of transmural perfusion ratio derived from dynamic CT-based myocardial perfusion imaging for the detection of haemodynamically relevant coronary artery stenosis [PDF]

, 2016
Objectives: To investigate the additional value of transmural perfusion ratio (TPR) in dynamic CT myocardial perfusion imaging for detection of haemodynamically significant coronary artery disease compared with fractional flow reserve (FFR).
Chelu, R.G. (Raluca Gabriela), Coenen, A. (Adriaan), Dedic, A. (Admir), Dijkshoorn, M.L. (Marcel), Geuns, R.J.M. (Robert Jan) van, Kono, A.K. (Atsushi K.), Kurata, A. (Akira), Lubbers, M.M. (Marisa), Nieman, K. (Koen), Rossi, A.G. (Adriano)   +9 more
core   +4 more sources

Change in angiogram-derived management strategy of patients with chest pain when some FFR data are available: How consistent is the effect? [PDF]

, 2017
Background The assessment of patients presenting with angina using invasive angiography alone is imperfect. By contrast, fractional flow reserve (FFR) allows for assessment of lesion-specific ischemia, which is predictive of clinical outcome.
Curzen, N, Mahmoudi, M, Mamas, MA, Nagaraja, V, Rogers, C   +4 more
core   +1 more source