Abstract #0434

A Robust Cryogenic RF Coil (88K) for In-vivo Hyperpolarized 13C MRI of Rats

Juan Diego Sánchez Heredia¹, Rafael Baron¹, Esben S. Szocska Hansen², Daniel H. Johansen¹, Vitaliy Zhurbenko¹, Christoffer Laustsen², and Jan H. Ardenkjær-Larsen¹

¹Department of Electrical Engineering, Technical University of Denmark (DTU), Kgs. Lyngby, Denmark, ²MR Research Centre, Department of Clinical Medicine, Aarhus University, Aarhus, Denmark

We report the performance of a cryogenic RF receive-only coil for ¹³C imaging of small animals. It is experimentally demonstrated 2-fold SNR improvement in comparison to a room temperature coil in immediate vicinity of the sample. The self-developed cryostat employed for coil cooling shows thermal stability within 5 h of use for 6 L of LN₂, which can be extended up to 12 h if more LN₂ is added. The Q_88K/Q_290K ratio of the unloaded coil is 550/285.

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