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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