Investigating the effects of external fields polarization on the coupling of pure magnetic waves in the human body in very low frequencies

Laleh Golestani-Rad¹ , Behzad Elahi² and Jalil Rashed-Mohassel³

¹Laboratory of Electromagnetics and Acoustics (LEMA), Ecole Polytechnique Fédérate de Lausanne (EPFL), Switzerland

²School of Medicine, Tehran University of Medical Sciences, Tehran, Iran

³Center of Excellence on Applied Electromagnetic Systems, Department of Electrical and Computer Engineering, Faculty of Engineering, University of Tehran, Iran

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BioMagnetic Research and Technology 2007, 5:3doi:10.1186/1477-044X-5-3


Published:	15 May 2007

Abstract

In this paper we studied the effects of external fields' polarization on the coupling of pure magnetic fields into human body. Finite Difference Time Domain (FDTD) method is used to calculate the current densities induced in a 1 cm resolution anatomically based model with proper tissue conductivities. Twenty different tissues have been considered in this investigation and scaled FDTD technique is used to convert the results of computer code run in 15 MHz to low frequencies which are encountered in the vicinity of industrial induction heating and melting devices. It has been found that external magnetic field's orientation due to human body has a pronounced impact on the level of induced currents in different body tissues. This may potentially help developing protecting strategies to mitigate the situations in which workers are exposed to high levels of external magnetic radiation.