Keywords: Non-Array RF Coils, Antennas & Waveguides, RF Arrays & Systems
Motivation: Potassium(39K) imaging provides an opportunity to probe cellular processes and has recently been demonstrated in human calf muscle at 7T
Goal(s): Developing an in-house birdcage resonator for potassium imaging, enabling simultaneous imaging with proton/sodium using previously developed dipole/loop array.
Approach: A low-pass eight-rung birdcage resonator was constructed using copper strip, chosen for its high Q factor. The resonator was optimized for maximum power efficiency and phantom images were acquired at 7T.
Results: The birdcage resonator demonstrated exceptional tuning and matching on the bench, with a homogeneous phantom image acquired in around 6 minutes. The findings suggest significant potential for in-vivo potassium quantification.
Impact: A birdcage resonator was designed and constructed in-house to create a capability for enhanced potassium imaging for neurological, musculoskeletal and oncology research. Potential integration with 1H/23Na array would allow simultaneous acquisition with three nuclei.
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