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Abstract #3455

Proton-Frequency-Transparent Coaxial RF coil for X-Nuclei MRI/MRS

Ming Lu1,2, Yijin Yang3, and Xinqiang Yan1,2,3
1Vanderbilt University Institute of Imaging Science, Vanderbilt University medical center, Nashville, TN, United States, 2Department of Radiology and Radiological Sciences, Vanderbilt University medical center, Nashville, TN, United States, 3Department of Electrical and Computer Engineering, Vanderbilt University, Nashville, TN, United States

Synopsis

Keywords: Non-Array RF Coils, Antennas & Waveguides, Non-Proton

Motivation: In multinuclear MRI/MRS, non-proton (X-) coil can interfere with proton (1H) coil, necessitating a solution to prevent their crosstalk.

Goal(s): The aim is to create a coaxial X-nuclei coil that is transparent at the 1H frequency, reducing interference and enhancing imaging performance.

Approach: The design employs a quarter-wavelength short-ended transmission line stub in a coaxial configuration to avoid additional lumped components and meanwhile ensure 1H transparency.

Results: Tests showed the 1H-transparent coaxial X-nuclei coil has a higher unloaded Q factor than LC-trap-based X-nuclei coils, indicating reduced coil loss and enhanced SNR.

Impact: This coil design offers a practical solution for X-nuclei MRI by maintaining high impedance at the 1H frequency, reducing interference with proton imaging, and supporting flexible, high-SNR, multinuclear imaging in a compact form.

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