نتایج جستجو برای: regadenoson
تعداد نتایج: 274 فیلتر نتایج به سال:
Background Cardiovascular disease is the leading cause of mortality in type 1 diabetics (T1D). T1D patients have increased coronary artery calcification (CAC) compared to nondiabetics. We hypothesize that myocardial blood flow (MBF) reserve can be measured in long-standing T1D patients using regadenoson stress cardiac magnetic resonance (CMR) perfusion imaging and is a marker of extensive ather...
Methods Forty-seven patients had 1.5T steady state free precession, regadenoson stress perfusion CMR and either a ≤ 30% coronary narrowing by CT angiography (CTA) or a ≥70% stenosis by invasive coronary angiography (ICA). CMR perfusion pixel maps were generated by a modelconstrained deconvolution with and without the myocardial segmentation. The two independent observers were blinded to clinica...
Background Regadenoson (REG) is a commonly used vasodilator stress agent that causes an increase in sympathetic response with associated increase in myocardial contractility and ventricular function in addition to coronary vasodilation. This agent has demonstrated high accuracy to detect coronary stenosis during myocardial perfusion imaging, but global and regional LV functional changes immedia...
Methods 130 consecutive patients with atrial fibrillation referred for perfusion stress CMR using either adenosine or regadenoson were followed for hard cardiovascular events defined as cardiac death or non-fatal myocardial infarction (MACE). Ischemia was defined as new onset of perfusion defects in at least two myocardial segments (positive test). Multivariable Cox regressions for MACE were pe...
Background Stress perfusion cardiac MRI (CMR) with a high relaxivity blood-pool contrast agent should allow for improved quantification of myocardial perfusion and myocardium blood volume in patients with coronary artery disease (CAD). In the current study, we sought to evaluate the diagnostic performance and image quality of stress perfusion CMR using the intravascular contrast agent gadofoves...
Abstract Funding Acknowledgements Type of funding sources: None. Introduction Most 82Rubidium-(Rb)-Positron emission tomography (PET) studies for myocardial perfusion, dipyridamole was used as vasodilator. Less data is available adenosine and regadenoson. Purpose Therefore, the aim to evaluate influence regadenoson on left ventricular ejection fraction (LVEF), blood flow (MBF) hemodynamics in v...
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