New design of flexible surface coil was presented. Voltage-controlled variodes instead of trimmers are used for remote coil frequency adjustment; λ/4 impedance transforming circuit are used to enable remote detune, thus detune circuits with big rigid components are moved out from the antenna part. By doing this, the antenna is covered by soft foam seamlessly which improved the flexibility significantly. Design was tested on four-element arrays. Experiments on both phantom and invivo testing show good results with this design.
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