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 Wang^1,2, James T. Grist^3,4,5, 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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