Abstract #5029

A Proposed Method for Retuning an RF Coil by Changing the Shield Radius for Multinuclear Imaging

Kieffer Davieau¹, Matthew Fox^1,2, Blaine Chronik^1,3, and Alexei Ouriadov^3,4

¹Medical Biophysics, Western University, London, ON, Canada, ²Lawson Health Research Institute, London, ON, Canada, ³Physics and Astronomy, Western University, London, ON, Canada, ⁴School of Biomedical Engineering, Western University, London, ON, Canada

Synopsis

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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