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Abstract #3569

Crosstalk between gradient coils

Fangfang Tang1, Fabio Freschi1,2, Maurizio Repetto1,2, Feng Liu1, and Stuart Crozier1

1School of Information Technology and Electrical Engineering, The University of Queensland, Brisbane, Australia, 2Department of Energy, Politecnico di Torino, Torino, Italy

In MRI, gradient coil switching generates eddy currents in surrounding conductors including intra-coil eddy currents in the surrounding gradient coils (crosstalk). In order to investigate the intra-coil eddy currents, a set of gradient coils with differing track widths has been designed for use in a cylindrical MRI system. It was found that the surrounding coils with wide tracks produced significantly larger eddy currents than the cold shield. It is therefore necessary to take into account the crosstalk between coils when evaluating coil performance. We found that the optimal track width to use in gradient coil design is around 14 mm.

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