A size-adaptable RF receiver coil prototype which can displace inter-element distance with negligible SNR degradation was investigated. We applied a simple method to enhance blocking impedance of the preamp decoupling circuit by using intentionally small matching capacitance. SNR of the size-adaptable prototype was evaluated for phantoms of 5 sizes ranging from knee size to abdomen size against commercial coils dedicated for each body parts. Despite of its broad size adaptability across various body parts and sizes, the prototype showed higher SNR than each commercial coil.
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