Results 21 to 30 of about 8,118,179 (242)

Validation of resting full-cycle ratio and diastolic pressure ratio with [15O]H2O positron emission tomography myocardial perfusion [PDF]

Heart and Vessels
AbstractFractional flow reserve (FFR) and instantaneous wave-free ratio (iFR) are invasive techniques used to evaluate the hemodynamic significance of coronary artery stenosis. These methods have been validated through perfusion imaging and clinical trials.
Jorge Dahdal, Frank Bakker, Johan Svanerud, Ibrahim Danad, Roel S. Driessen, Pieter G. Raijmakers, Hendrik J. Harms, Adriaan A. Lammertsma, Tim P. van de Hoef, Yolande Appelman, Niels van Royen, Paul Knaapen, Guus A. de Waard   +12 more
openaire   +7 more sources

Hemodynamic assessment of intracranial atherosclerotic stenosis: comparison between invasive non-hyperemic pressure ratio and angiography-derived quantitative flow ratio [PDF]

Frontiers in Neurology
ObjectivesTo evaluate the diagnostic accuracy of the quantitative flow ratio (QFR) for hemodynamic exploration of intracranial atherosclerotic stenosis, using the invasive cerebrovascular pressure ratio (CVPR) and resting full-cycle ratio (RFR) as ...
Xiaohui Wang, Yang Bian, Rongju Zhang, Haojing Zhu, Junjie Yang, Ruiling Wang, Xinfeng Liu, Bin Lv, Xiangyu Cao, Wei Dai, Zhibin Sun, Jing Jing, Zhihua Du, Shengyuan Yu, Jun Wang   +14 more
doaj   +2 more sources

Prognostic impact of resting full-cycle ratio and diastolic non-hyperemic pressure ratios in patients with deferred revascularization. [PDF]

Clin Res Cardiol, 2023
Abstract Background Non-hyperemic pressure ratios (NHPRs) like resting full-cycle ratio (RFR), diastolic pressure ratio during entire diastole (dPR[entire]) and diastolic pressure ratio during wave-free period (dPR[WFP]) are increasingly used to guide revascularization.
Halbach M, Ameskamp C, Mauri V, Ernst A, Lake P, Nienaber S, Baldus S, Adam M, Wienemann H.   +8 more
europepmc   +5 more sources

Comparison of Machine Learning Computed Tomography-Based Fractional Flow Reserve and Coronary CT Angiography-Derived Plaque Characteristics with Invasive Resting Full-Cycle Ratio. [PDF]

J Clin Med, 2020
Background: The aim is to compare the machine learning-based coronary-computed tomography fractional flow reserve (CT-FFRML) and coronary-computed tomographic morphological plaque characteristics with the resting full-cycle ratio (RFRTM) as a novel ...
Baumann S, Hirt M, Rott C, Özdemir GH, Tesche C, Becher T, Weiss C, Hetjens S, Akin I, Schoenberg SO, Borggrefe M, Janssen S, Overhoff D, Lossnitzer D.   +13 more
europepmc   +2 more sources

"Trust the eye, but verify". Case report

Кардиоваскулярная терапия и профилактика, 2023
Coronary angiography is today a routine method for assessing the coronary arteries. However, in practice, invasive cardiologists daily face difficulties in assessing the coronary system. The publication considers the management of an elderly patient with
M. T. Taliuridze, F. B. Shukurov, A. S. Shanoyan   +2 more
doaj   +1 more source

The Impact of Age on the Physiological Assessment of Borderline Coronary Stenoses

Medicina, 2023
Background and Objectives: Coronary angiography is the gold standard for diagnosing coronary artery disease (CAD). In the case of borderline changes, patients require further diagnosis through ischemia assessment via one of the recommended methods of ...
Wojciech Zasada, Barbara Zdzierak, Tomasz Rakowski, Beata Bobrowska, Agata Krawczyk-Ożóg, Sławomir Surowiec, Stanisław Bartuś, Andrzej Surdacki, Artur Dziewierz   +8 more
doaj   +1 more source

Comparison of Fractional Flow Reserve with Resting Non-Hyperemic Indices in Patients with Coronary Artery Disease

Journal of Cardiovascular Development and Disease, 2023
Guidelines recommend using hyperemic (FFR) and non-hyperemic (iFR/RFR) methods of evaluating coronary artery stenoses in patients with coronary artery disease.
Barbara Zdzierak, Wojciech Zasada, Agata Krawczyk-Ożóg, Tomasz Rakowski, Stanisław Bartuś, Andrzej Surdacki, Artur Dziewierz   +6 more
doaj   +1 more source

Will Resting Full-Cycle Ratio Substitute Fractional Flow Reserve [PDF]

Indian Journal of Cardiovascular Disease in Women WINCARS, 2020
AbstractPhysiological assessment of coronary artery stenosis added an element of certainty of benefit to the patient undergoing revascularization. Fractional flow reserve (FFR) was the gold standard, with good reproducibility, correlation with noninvasive inducible ischemia testing and, most importantly, clinical benefit.
openaire   +1 more source

Comparison of Resting Full Cycle Ratio with Fractional Flow Reserve in Indian Population [PDF]

Indian Journal of Cardiovascular Disease in Women WINCARS, 2020
Abstract Background From the previous studies fractional flow reserve (FFR) was considered best for hemodynamic assessment of bordersline coronary lesions. In literature, previous studies compared instant wave-free ratio (IFR) with resting full cycle ratio (RFR) which concluded that both were equally effective diagnostically. Studies comparing RFR with
Shravan Kumar Ch, Sudhakar Kanumuri, Garre Indrani, M. Naveen Kumar   +3 more
openaire   +1 more source

Recommendations for the performance of coronary physiology studies.

, 2023
RFR, resting full-cycle ratio; FFR, fractional flow reserve; CFR, coronary flow reserve; IMR, index of microvascular resistance; Tmn, mean transit time. (DOCX)
Marcos Garcia-Guimaraes (8458002), Carlos Cortés Villar (15453573), Ferran Barbé (510961), Thalía Belmonte (6657887), Vicente Peral Disdier (13639951), Juan Casanova-Sandoval (13639927), Fernando Worner (3152415), Raúl Millán Segovia (15453576), Diego Fernández-Rodríguez (8077805), Ignacio Barriuso (13639930), Lucía Matute-Blanco (15453570), Kristian Rivera (8077808), Iván D. Benítez (11480363), David de Gonzalo-Calvo (11312838)   +13 more
core   +1 more source