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Abstract #4364

Golden Step Phase Encoding: Simultaneous Real-Time & ECG Gated-Cine Parallel MRI with Retrospective Selection of Temporal Resolution, Acceleration Rate & Acquisition Duration

J. Andrew Derbyshire1, Haris Saybasili1, Liheng Guo2, Ozan Sayin2, Peter Kellman1, Robert J. Lederman1, Daniel A. Herzka2

1National Heart, Lung & Blood Institute, NIH, Bethesda, MD, United States; 2Department of Biomedical Engineering, Johns Hopkins School of Medicine, Baltimore, MD, United States

Golden Step phase encoding provides close-to-uniform sampling of k-space for any number of consecutive TRs. We demonstrate a MR imaging strategy that allows simultaneous real-time and ECG-gated Cine imaging from a single acquisition. In particular, multiple sets of images with differing temporal resolutions may be reconstructed with arbitrary acceleration rates at arbitrary temporal positions from a single Cartesian acquisition. Furthermore, the gated Cine reconstructions can be performed from acquisitions comprising an arbitrary number of heartbeats, permitting the reconstruction of images even from incomplete breath-holds.