Some Numerical Methods Of Thermal Dosimetry
For Applications In Bioelectromagnetics
Author(s)
D. Poljak1, H. Dodig2, D. Cavka1 & A. Peratta2
Abstract
Some thermal dosimetry methods for the analysis of human exposure to high
frequency (HF) electromagnetic radiation are reviewed in this work. The
formulation is based on the bio-heat transfer equation. Calculating the
distribution of specific absorption rate (SAR) inside the biological body provides
an assessment of a related thermal response to HF electromagnetic fields. The
temperature increase is obtained by solving the bio-heat transfer equation for
different exposure scenarios via Boundary Element Method (BEM) and Finite
Element Method (FEM), respectively. Some illustrative computational examples
are presented in the paper.
1 Introduction
The dominant and well-established biological effect due to human exposure to
high frequency (HF) electromagnetic radiation is tissue heating [1–6]. Thermal
effects are often defined in terms of energy deposition higher than the
thermoregulatory capacity of the human body [3]. Consequently, adverse effects
can occur when the total power absorbed by the body is large enough to cause
protective mechanisms for heat control to break down, thus resulting in
uncontrolled rise in the body temperature (hyperthermia).
The hazardous field levels can be quantified analysing the thermal response of
the human body exposed to HF radiation. The problem to be considered is by
itself twofold. First, the rate of power deposition in tissue due to HF radiation
has to be calculated; and second the related temperature distribution within the
body has to be assessed. The electromagnetic analysis itself includes the incident
Keywords
Related Book
Other papers in this volume
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