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Abstract #2707

The Effect of Magnet Flanges on Eddy Current Predictions

Dominic Michael Graziani1, Jean-Baptiste Mathieu1, Seung-Kyun Lee1

1GE Global Research, Niskayuna, NY, United States

Eddy currents from an actively shielded transverse gradient coil were evaluated for the case where the eddy current surfaces are approximated by a coaxial cylinder, as well as a cylinder with flanges. The percent error in the predicted eddy current response in the imaging volume due to neglecting the magnet flanges was determined to be non-negligible, with an observed rms error of 6.9% and 15.8% with and without pre-emphasis respectively. These results have implications when designing gradient coils with an optimal eddy current response.