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Abstract #4287


Andrew Tyler1,2, Justin Lau1,2, Vicky Ball1, Kerstin Timm1, Tony Zhou1,2, Damian Tyler1,2, and Jack J. Miller1,2,3

1Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford, United Kingdom, 2Oxford Centre for Clinical Magnetic Resonance Research, John Radcliffe Hospital, Oxford, United Kingdom, 3Department of Physics, University of Oxford, Oxford, United Kingdom

Spiral k-space trajectories are a powerful tool for in vivo 13C hyperpolarized cardiac MRI, however short readout durations limit the maximum resolution that single-shot spiral trajectories can achieve for a given field of view. This leaves the researcher with a choice at acquisition time, use a single-shot trajectory with poor spatial resolution or switch to a multiple-shot scheme with improved spatial resolution at the cost of degraded temporal resolution. We present a hybrid-shot spiral trajectory, which by compounding a single-shot and multiple-shot spiral, shifts this decision to analysis time.

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