Abstract #1379
Eigen matrix approach in coupled-circuit numerical simulation of eddy currents in MRI systems
Md. Shahadat Hossain Akram 1 , Yasuhiko Terada 1 , Keiichiro Ishi 1 , and Katsumi Kose 1
1
Institute of Applied Physics, University of
Tsukuba, Tsukuba, Ibaraki, Japan
In coupled-circuit simulation of eddy currents, system
of differential equations is solved to get eddy currents
transient responses in different domains at different
locations. It is desirable to improve computational
efficiency whenever possible. Implementing Eigen matrix
techniques to solve this system of equations removes
singularity problems totally and reduces calculation
time to a large level. We have implemented this approach
to analyze eddy currents for both open and large
closed-bore MRI systems. We have also conducted FID
measurement of eddy fields by NMR probe to verify our
approach. We have found good agreement between
simulation and experiment.
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