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Abstract #4903

Building a computational model of a transmit body coil: considerations for RF safety.

Elena Lucano 1 , Gonzalo Mendoza 1 , Tom Lloyd 2 , Steve Wedan 2 , Wolfgang Kainz 1 , and Leonardo Angelone 1

1 Office of Science and Engineering Laboratories, Division of Physics, US Food and Drug Administration, Center for Devices and Radiological Health, Silver Spring, MD, United States, 2 Imricor Medical Systems, Burnsville, MN, United States

Numerical models have been used to evaluate the potential for radiofrequency induced heating of medical devices in a MR environment. The aim of this study was to evaluate three model designs with respect to their accuracy in simulating the electromagnetic field generated by a body coil. The experimental validation showed that all three of the numerical models properly simulated the magnetic field distribution. However, to represent the true electric field and avoid possible overestimation by several orders of magnitude, accurate modeling of the tuning capacitors, coil losses, and source configuration was required.

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