An Analytical Study of the effect of RF Chokes on Sensitivity Loss for 'iPRES' Coils at 3T
Yubin Cai1, John Stager1, Hsin-Jung Yang1, Debiao Li1, and Hui Han1
1Biomedical Imaging Research Institute, Cedars-Sinai Medical Center, Los Angeles, CA, United States
Reception, Excitation, and Shimming (iPRES) technology integrates multi-coil B0
shimming capability into conventional receive arrays1-6. To enable
simultaneous AC and DC current in the shared conductor, the addition of RF
chokes or inductors across distributed capacitors on RF receive loops appears to
be inevitable. iPRES coils experimentally shows non-negligible SNR loss,
compared to its conventional counterpart3. This study initiates a quantitative
and analytical explanation on how these added chokes would impact the coil
quality factor and sensitivity.
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