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Abstract #1337

New matching networks for coil and preamplifier

Xueming Cao 1 , Maxim Zaitsev 1 , Jrgen Hennig 1 , Jan G Korvink 2 , and Elmar Fischer 1

1 Department of Radiology, University Medical Center Freiburg, Freiburg, Germany, 2 Institute of Microsystem Technology, Freiburg, Germany

Based on the assumption that the sample and preamplifier are the dominant noise sources for MRI, the coil loop is matched to 50 Ohm through a coil matching network and the preamplifier is noise matched to 50 Ohm too, through another matching network. However, with receiving coils in an array becoming increasingly smaller, the noise contributed from their matching networks cannot be neglected. Here we present two methods to simplify the coil and preamplifier matching networks, therefore their noise contribution is reduced

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