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Abstract #0623

Fast Electromagnetic Analysis of Transmit RF Coils based on Accelerated Integral Equation Methods

Jorge Fernandez Villena 1 , Athanasios G. Polimeridis 1 , Bastien Guerin 2 , Yigitcan Eryaman 1 , Lawrence L. Wald 2,3 , Elfar Adalsteinsson 1,3 , Jacob K. White 1 , and Luca Daniel 1

1 Research Laboratory of Electronics, Dept. of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, MA, United States, 2 A. A. Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital, Charlestown, MA, United States, 3 Harvard-MIT Division of Health Sciences Technology, Cambridge, MA, United States

We propose a methodology for the comprehensive full-wave electromagnetic analysis of arbitrary MRI transmit coils within few minutes for a given realistic body model at a given frequency. It allows us to compute the un-tuned coil port parameters, to obtain the current distribution for the tuned coils, and the corresponding electromagnetic field distribution in the inhomogeneous body for each transmit channel. Such an approach is fast enough (2-3 minutes for 8-coil arrays) to be applied in automatic procedures for the optimization of high field coil designs based on the electromagnetic field distribution in realistic inhomogeneous human body models.

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