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Abstract #0319

Rapid Ungated CMR Perfusion Imaging to Evaluate Coronary Artery Disease in Patients with Arrhythmia

Krishna N. Velagapudi1, 2, Alexis Harrison1, 2, Ganesh Adluru3, Akram Shaaban, Brent Wilson1, 2, Daniel Kim2, 3, Nassir F. Marrouche1, 2, Christopher J. McGann1, 2, Edward V.R. DiBella2, 3

1Division of Cardiology, University of Utah, Salt Lake City, UT, United States; 2CARMA, Department of Internal Medicine, University of Utah, Salt Lake City, UT, United States; 3Utah Center for Advanced Imaging Research, Department of Radiology, University of Utah, Salt Lake City, UT, United States

Cardiac Magnetic Resonance (CMR) perfusion imaging is an emerging noninvasive tool for evaluating coronary artery disease in intermediate risk patients. Its utility may be limited in patients with arrhythmia and gating problems during the scan, which degrade image quality and may preclude accurate interpretation. This study performs an initial evaluation of the quality of images and the diagnostic utility of ungated and self-gated perfusion CMR in evaluating coronary disease in eight patients, including patients with arrhythmia.

Keywords

accuracy acquisition angiography approaches around arrhythmia arrhythmias artery artifact atrial binned black blinded blue breathing called cardiac circles city clinical comparable completed confirm consistent constraints coronary correlating correspond cycle datasets defects deformable degrade depict detection determine diagnosing diagnosis diagnostic diastole diastolic disease division eight especially established evaluate excluded expand fast fibrillation findings five fixed frame frames free gadolinium gate gated gating heart highest illustration improved include independent initial internal invasive iterative lake late length limitation made maintaining marked medicine minute model motion nadirs near need noted pass patients peak peaks perfusion plot plotted positive post previously problem problems process processing protocol pulse quality radial radiology random rapid read readers recovery reduce registration regular relies residual resolution respectively respiratory rest retrospectively reversible rhythm risk role salt sample saturation scanning scores selected self sensing sensitivity sets short simplifies sinus slice slices spatial specificity stress systole systolic temporal tool trough turbo underwent variable window