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Abstract #0551

Power balance considerations for RF transmit coil arrays

Andre Kuehne 1,2 , Sigrun Goluch 1,2 , Ewald Moser 1,2 , and Elmar Laistler 1,2

1 Center for Medical Physics and Biomedical Engineering, Medical University of Vienna, Vienna, Vienna, Austria, 2 MR Center of Excellence, Medical University of Vienna, Vienna, Vienna, Austria

The bower balance of an RF coil gives valuable insight into its performance. For multi-channel arrays, the amount of power deposited in the load, the coil itself or radiated depends on the superposition of the single-channel fields. In this work, the power correlation matrix formalism is extended to encompass all terms of the power balance, thus allowing straight-forward evaluation of the power balance for any excitation, worst-case estimates, and providing means to verify EM simulation integrity.

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