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Abstract #2509

Flexible 8-Channel Array for Hyperpolarized 13C at 3T (32.1 MHz), with Nearly Identical 23Na (33.8 MHz) Sensitivity Profiles

Juan Diego Sánchez Heredia1, Wenjun Wang1,2, James T. Grist3,4,5, Esben Søvsø Szocska Hansen6, Christoffer Laustsen6, Vitaliy Zhurbenko2, and Jan Henrik Ardenkjær-Larsen1
1Department of Health Technology, Technical University of Denmark (DTU), Kgs. Lyngby, Denmark, 2Department of Electrical Engineering, Technical University of Denmark (DTU), Kgs. Lyngby, Denmark, 3Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford, United Kingdom, 4Oxford Centre for Magnetic Resonance, University of Oxford, Oxford, United Kingdom, 5Department of Radiology, The Churchill Hospital, Oxford University Hospitals NHS Trust, Oxford, United Kingdom, 6The MR Research Center, Department of Clinical Medicine, Aarhus University, Aarhus, Denmark

We describe the design of a flexible coil array tuned optimally for 13C MRI at 3T (32.1 MHz), but with the coil coupling coefficients matched to be nearly identical at the 13C and 23Na (33.8 MHz) frequencies. In this way, the array provides the means to obtain accurate sensitivity profiles for hyperpolarized 13C imaging from the high 23Na naturally present in biological tissue. We show the feasibility of this approach, and compare the performance to other 13C coils, showing that the 13C SNR provided by this array is not compromised despite the modification to equalize the 13C and 23Na profiles.

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