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Abstract #1336

A method to calculate the noise factor of the receive coil matching network

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

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

In ordinary MRI experiments using local receive coil, major noise sources in signal reception are the sample and the preamplifier. However, as the sizes of individual coil elements becomes smaller, noise contribution from the coil matching network needs to be taken into account. Here, we present a method to calculate the noise factor of coil matching network. Approximations are also developed to allow the estimation of a coil matching network noise factor on the RF bench. Based on the calculations, a method to reduce the coil matching network noise factor is presented.

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