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Abstract #5450

Analytical Solution for Electric Field Induced Inside Ellipsoidal Conductor by Time-Varying Magnetic Fields in MRI

Peter J Shin1 and Daniel B Vigneron1

1University of California, San Francisco, San Francisco, CA, United States

An analytical, closed-form solution for the electric field induced inside an ellipsoidal conductor by time-varying gradients in MRI was developed. We applied the method to calculate the electric field for an ellipsoid centered on the isocenter having the semi-axis lengths 20 cm, 15 cm, and 40 cm in LR, AP, and SI directions. We observed that, due to the geometry, ramping up on the Y-axis resulted in the highest electric field intensity. Furthermore, we found that, when the ellipsoid is shifted in the SI direction, the electric field intensity increases approximately 100%.

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