An improved trap design for decoupling multinuclear RF coils

Multinuclear magnetic resonance spectroscopy and imaging require a radiofrequency probe capable of transmitting and receiving at the proton and non‐proton frequencies. To minimize coupling between probe elements tuned to different frequencies, LC (inductor‐capacitor) traps blocking current at the 1H frequency can be inserted in non‐proton elements. This work compares LC traps with LCC traps, a modified design incorporating an additional capacitor, enabling control of the trap reactance at the low frequency while maintaining 1H blocking.

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