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Abstract #0888

Non-Cartesian Retrospective Reconstruction of Cardiac Motion in Patients with Severe Arrhythmia

Francisco Contijoch 1 , Yuchi Han 1 , Michael Schacht Hansen 2 , James J Pilla 1 , Joseph H Gorman 1 , Robert C Gorman 1 , and Walter RT Witschey 1

1 University of Pennsylvania, Philadelphia, PA, United States, 2 NHLBI, NIH, Bethesda, MD, United States

Although cardiovascular magnetic resonance imaging (MRI) is the gold standard for assessment of cardiac function, image quality is compromised in patients with ectopy. We sought to understand how ECG-gated retrospective reconstruction fails despite arrhythmia rejection before developing a retrospective reconstruction method using cardiac self-gating on low spatial resolution images are obtained from golden angle radial MRI data. Myocardial systolic and diastolic motion was inferred from segmented ventricular volumes and golden angle projections were retrospectively reconstructed to obtain high quality images. The effectiveness of the method was evaluated in 2 patients with severe ventricular arrhythmia.

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