Fast MRI coil analysis based on 3-D electromagnetic and RF circuit co-simulation |
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Authors: | Mikhail Kozlov Robert Turner |
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Institution: | aMax Planck Institute for Human Cognitive and Brain Research, Stephanstraße 1A, 04103 Leipzig, Germany |
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Abstract: | To accelerate the analysis of a multi-element MRI coil, a two-way link is used between radiofrequency (RF) circuit and 3-D electromagnetic (EM) simulation tools. In this configuration, only one 3-D EM simulation is required to investigate the coil performance over a range of different tunings, saving considerable computation time. For the purpose of 3-D EM simulation, the coil feed networks and trim capacitors are substituted by 50 Ω ports. The entire coil was tuned in the RF circuit domain, and the near-field profiles of the electric and magnetic field components were then calculated, together with the specific energy absorption ratio (SAR) maps in the 3-D EM domain |
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Keywords: | Radio-frequency (RF) coils Magnetic resonance imaging (MRI) Computational electromagnetics |
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