The SNR and inter coil coupling properties of a range of litz wire coils, in conjunction with the circuitry to match the coils to a low impedance pre-amplifier, were examined. The results of these studies were combined with observations of SNR and coil coupling found in the images of phantoms, obtained with various array designs, to construct an RF array optimized for 0.2 T (8.5 MHz). The array has demonstrated its capability in acquiring cardiac images from human volunteers in our field cycling imager.
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