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Abstract #3183

Analytical Performance Evaluation and Optimization of Resonant Inductive Decoupling (RID)

Andre Kuehne 1,2 , Elmar Laistler 1,2 , Anke Henning 3,4 , Ewald Moser 1,2 , and Nikolai I Avdievich 3

1 Center for Medical Physica and Biomedical Engineering, Medical University of Vienna, Vienna, Austria, 2 MR Centre of Excellence, Medical University of Vienna, Vienna, Austria, 3 Max Planck Institute for Biological Cybernetics, Tuebingen, Germany, 4 Institute for Biomedical Engineering, UZH and ETH Zurich, Zurich, Switzerland

We derive an analytical framework for analyzing the coil power efficiency impact of resonant inductive decoupling (RID) for arbitrary channel coils. It is applied to a two-channel array, and analytical expressions for load power deposition dependent on the resistive coupling factor, degree of coupling compensation and relative driving phase shift between elements are derived. The results show that coil performance can be enhanced or degraded by RID, depending on the exact coil application scenario, and great care needs to be taken in a practical setup.

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