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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