Meeting Banner
Abstract #4352

Analysis of Imaged Object's Permittivity, Conductivity, Size and Position Effects on Optimal Capacitive, Inductive and Transformer Decoupling Schemes in RF Coil Arrays

Volkan Emre Arpinar1, L. Tugan Muftuler1, 2

1Department of Neurosurgery, Medical College of Wisconsin, Milwaukee, WI, United States; 2Center for Imaging Research, Medical College of Wisconsin, Milwaukee, WI, United States

Although transformer, capacitive and inductive decoupling techniques have been widely used in transmit or receive coil arrays, a comparative analysis of their tolerances to load variances were not reported. In this study full wave electromagnetic simulations with realistic coil models are used to understand the robustness of each decoupling method to the variations in size and electrical properties of the loading object.

Keywords

absence achieved adjacent admittance affect affected aging alternative although amount arise around array arrays audience axes becomes calculations capacitive circuit coil coils college column columns combed combined comparative compartment component components conductivity control copper coupling critical decoupled decoupling decrease depends design deviate directly effective electrical electromagnetic element elements especially expanded extent find findings frequency full head heating highest human illustrates impedance improves indicate inductive inductors influenced initial inner input interaction interactions keeping layer lists load loaded loading locations lowest manufacturing matching medical might mimic minimizing model modeled modeling mutual nearby neurosurgery neutralize next noise object opposite optimal optimum original outer overlapping parallel partial performances phantom poorer popular position previous previously probably pronounced properties quality receive related remains reported respectively robust robustness scaled schemes scientists sensitive sensitivity shape simple simulate simulated solver suggested swept table target together tolerances transceiver transformer transmit trend true tuning understand variances variations varied wave widely windings yield