Publication Title
The international journal of cardiovascular imaging
Document Type
Article
Publication Date
11-1-2017
Keywords
Aged; Aged, 80 and over; Atrial Fibrillation; Coronary Angiography; Coronary Artery Disease; Coronary Circulation; Female; Heart Rate; Humans; Hyperemia; Magnetic Resonance Imaging; Male; Middle Aged; Myocardial Perfusion Imaging; Predictive Value of Tests; Purines; Pyrazoles; Reproducibility of Results; Time Factors; Vasodilator Agents
Abstract
Cardiovascular magnetic resonance (CMR) perfusion has been established as a useful imaging modality for the detection of coronary artery disease (CAD). However, there are several limitations when applying standard, ECG-gated stress/rest perfusion CMR to patients with atrial fibrillation (AF). In this study we investigate an approach with no ECG gating and a rapid rest/stress perfusion protocol to determine its accuracy for detection of CAD in patients with AF. 26 patients with AF underwent a rapid rest/regadenoson stress CMR perfusion imaging protocol, and all patients had X-ray coronary angiography. An ungated radial myocardial perfusion sequence was used. Imaging protocol included: rest perfusion image acquisition, followed nearly immediately by administration of regadenoson to induce hyperemia, 60 s wait, and stress image acquisition. CMR perfusion images were interpreted by three blinded readers as normal or abnormal. Diagnostic accuracy was evaluated by comparison to X-ray angiography. 21 of the CMR rest/stress perfusion scans were negative, and 5 were positive by angiography criteria. Majority results of the ungated datasets from all of the readers showed a sensitivity, specificity and accuracy of 80, 100 and 96%, respectively, for detection of CAD. An ungated, rapid rest/stress regadenoson perfusion CMR protocol appears to be useful for the diagnosis of obstructive CAD in patients with AF.
Area of Special Interest
Cardiovascular (Heart)
Specialty/Research Institute
Cardiology
