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. 2007 May 15:5:3.
doi: 10.1186/1477-044X-5-3.

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

Laleh Golestani-Rad  1 , Behzad Elahi, Jalil Rashed-Mohassel
Affiliations

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

Laleh Golestani-Rad et al. Biomagn Res Technol. .

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.

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Figures

Figure 1
Figure 1
Views of anatomic model of human body used in the simulation.
Figure 2
Figure 2
Layer-averaged electric current for two different polarizations of magnetic field.
Figure 3
Figure 3
Organ-averaged electric current for different parts of body.
Figure 4
Figure 4
Maximum of total electric current for different parts of body.
See this image and copyright information in PMC

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References

    1. Sahl JD, Kelsh MA, Greenland S. Cohort and nested case-control studies of hematopoietic cancers and brain cancer among electric utility workers. Epidemiology. 1993;5:104–114. doi: 10.1097/00001648-199303000-00005. - DOI - PubMed
    1. Savitz DA, Loomis DP. Magnetic field exposure in relation to leukemia and brain cancer mortality among electric utility workers. American Journal of Epidemiology. 1995;5:123–134. - PubMed
    1. Furse CM, Gandhi OP. Calculation of electric fields and currents induced in a millimeter-resolution human model at 60 Hz using the FDTD method. Journal of Bioelectromagnetics. 1998;5:293–299. doi: 10.1002/(SICI)1521-186X(1998)19:5<293::AID-BEM3>3.0.CO;2-X. - DOI - PubMed
    1. Gandhi OP, Chen JY. Numerical dosimetry at power-line frequencies using anatomically based models. Bioelectromagnetics. 1992. pp. 43–60. - DOI - PubMed
    1. Gandhi OP, Kang G, Wu D, Lazzi G. Currents Inducedin Anatomic Models of the Human for Uniformand Nonuniform Power Frequency Magnetic Fields. Bioelectromagnetics. 2001;5:112–121. doi: 10.1002/1521-186X(200102)22:2<112::AID-BEM1014>3.0.CO;2-0. - DOI - PubMed

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