Abstract #2157

SNR simulations including coupled preamplifier noise

Matthias Malzacher^1,2, Markus Vester³, Robert Rehner³, Christopher Stumpf¹, and Patrick Korf¹

¹Friedrich-Alexander University Erlangen-Nuremberg, Erlangen, Germany, ²Computer Assisted Clinical Medicine, University Heidelberg, Medical Faculty Mannheim, Mannheim, Germany, ³Siemens Healthcare GmbH, Erlangen, Germany

Using reciprocity, available SNR from a receive coil array can be calculated by maximizing B₁- at the target voxel for unit input power. However, for strongly coupled or lightly loaded coil elements, the noise figure degradation due to coupled preamplifier noise becomes significant. It is shown here that this effect can be modeled by power loss in a resistive attenuator at each coil port. Thus, it is now possible to simulate any coil configuration, including those where coil coupling cannot be neglected.

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