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Abstract #4372

Exposure of infants in baby gradient coils

Fangfang Tang1, Luca Giaccone2, Fabio Freschi1,2, Stuart Crozier1, and Feng Liu1
1School of Information Technology and Electrical Engineering, The University of Queensland, Brisbane, Australia, 2Department of Energy, Politecnico di Torino, Torino, Italy


In pediatric magnetic resonance imaging, infants are exposed to rapid, time-varying gradient magnetic fields, leading to electric fields induced in the body of infants and potential safety risks (e.g., peripheral nerve stimulation). In this work, the induced electric fields by the small x, y, z gradient coils in an infant model were numerically evaluated at different model positions. It was found that the induced electric fields in most tissues exceeded the basic restrictions of the ICNIRP 2010 guidelines.

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