Coronary Artery Disease Clinical Trial
Official title:
Ferumoxytol-enhanced Magnetic Resonance Imaging
There are no current alternatives to diagnostic contrast-requiring imaging for patients with an eGFR <30mL/min due to the association of gadolinium-based imaging modalities to nephrogenic systemic fibrosis and iodinated contrast-induced kidney injury. Ferumoxytol-enhanced imaging may offer an alternative approach.
This is a case control study which will assess the resolution by which the coronary arteries can be visualized using ferumoxytol-enhanced cardiac magnetic resonance angiography (fcMRA) in patients with prior regional cardiac ischemia localized by stress-induced echocardiography. Resolution will be compared to invasive coronary arteriography completed in all patients that will be analyzed at the end of the study. Masked experts will interpret fcMRA images to determine if coronary stenosis is present or absent. By strict definitions, this is a single-arm study. However comparison will be made between fcMRA and invasive coronary arteriography performed in each patient. With a prevalence of disease of approximately 0.35 in the study population, it is anticipated that both sensitivity and specificity of fcMRA to identify the absence of coronary artery stenosis can be calculated. ;
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