The Human Body Exposed To A
Magnetotherapy Device Magnetic Field
Author(s)
D. Poljak, S. Sesnic, D. Cavka, M. Titlic & M. Mihalj
Abstract
This paper deals with human exposure to extremely low frequency (ELF)
magnetic fields generated by a magnetotherapy device. The problem is twofold,
i.e. it implies the assessment of an external ELF magnetic field and other internal
parameters related to the human body response to this field (total current, power
density, total power). Of particular importance is the current density induced
inside the human body as the basic restriction proposed by the relevant
international bodies for non-ionizing radiation, such as ICNIRP. ELF magnetic
field levels generated from a magnetotherapy device are obtained from
measurements. Knowing the external magnetic field generated by a magnet, the
circular current density induced in the human body is obtained by the use of the
analytical formula arising from the disk model of the human torso. On
computing the circular current density, it is possible to assess other parameters of
interest related to body response. The obtained values of both the magnetic field
and the internal current density are compared to exposure limits in terms of
reference levels and basic restrictions proposed by ICNIRP.
Keywords: magnetotherapy, human exposure to magnetic fields, disk model of
the body, induced current density.
Keywords
magnetotherapy, human exposure to magnetic fields, disk model of
the body, induced current density.
Related Book
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