Sahil P. Bhatia1, Fraser J. Robb2,
Yiping Guan2, Mary P. McDougall1
1Magnetic Resonance Systems Lab, Texas
A & M University, College Station, TX, United States; 2G.E.
Healthcare, Aurora, OH, United States
Effective
geometric decoupling between array elements becomes increasingly important
when isolation preamplifiers are not available or employable, as is the case for
certain field strengths and in the case of transmit array design. We present
two methods of tunable geometric decoupling that allow the coil-to-coil
decoupling to be adjustable and provide a straightforward mechanism for
optimizing the overlap area. Bench measurements demonstrate the ability of
both mechanisms to optimize decoupling between adjacent elements under a
range of loading conditions, and imaging confirms that the addition of the
mechanisms does not alter the field patterns or SNR of the coil elements.
Keywords