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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