This study investigates the feasibility of changing the shield radius of an RF coil to shift the resonant frequency from 1H to 19F for multinuclear imaging. The method proposed in this investigation was verified by changing the resonant frequency of a 129Xe RF Coil a total of 1.18 MHz by changing the shield radius, allowing it to be used in a 2.9T Siemens MRI and a 3.0T GE MRI. It was found that altering the shield radius had similar effects on the resonant frequency as using a variable tuning capacitor, allowing for one coil to be compatible with multiple scanners.
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