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Abstract #1327

Performance of a Phased Array for 31P Cardiac MR Spectroscopy

Christopher T. Rodgers1, Lowri E. Cochlin2, Damian J. Tyler2, Stefan Neubauer1, Matthew D. Robson1

1Oxford Centre for Clinical Magnetic Resonance Research, University of Oxford, Oxford, United Kingdom; 2Department of Physiology, Anatomy and Genetics, University of Oxford, United Kingdom

Cardiac 31P spectra of high-energy phosphorus metabolites are typically acquired using a transmit/receive surface coil. In MR imaging, single element surface coils have largely been superseded by receive arrays, which provide higher signal-to-noise ratios (SNRs) and larger fields of view (FOVs). We present the first receive array cardiac 31P spectra at 3T. Comparing with an established protocol in 8 normal volunteers, we observe larger FOV and homogeneity, increased comfort, and an enhancement in SNR comparable to that from NOE. Our 8-element array contains for the first time posterior elements, which contribute up to 35% at the posterior of the heart.