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Abstract #1744

3-Fold SNR Enhancement of Small Animal $$${^1}{^3}$$$C MRI using a Cryogenically Cooled (88 K) RF Coil

Juan Diego Sánchez-Heredia1, Daniel Højrup Johansen1, Rafael A. Baron1, Matthias Schneider2, Gabriele Spörl2, Jarek Wosik3, Vitaliy Zhurbenko1, and Jan H. Ardenkjær-Larsen1

1Department of Electrical Engineering, Technical University of Denmark, Kgs. Lyngby, Denmark, 2Institut für Luft- und Kältetechnik gemeinnützige GmbH, Dresden, Germany, 3Electrical and Computer Engineering Department, University of Houston, Houston, TX, United States

SNR in hyperpolarized 13C MRI is often limited by the low sensitivity of the receive RF chain at the low Larmor frequency of 13C. In this study we present an RF transparent (non-metallic) cryostat designed for small animal imaging, which allows a coil temperature of 88 K, with a coil-to-sample distance below 3 mm. Performance of the cryostat equipped with a 30 x 40 mm2 13C surface coil (3 T, 32 MHz) was tested and 3-fold SNR gain over room temperature coil was achieved.

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