Abstract
In this paper, the Speciflc Absorption Rate (SAR) distribution in a human head irradiated by an obliquely incident electromagnetic plane wave is studied. A simple planar multi-layered structure is used to model the human head. Moreover, the steady state thermal elevation distribution is calculated by solving the bioheat equation using the flnite difierence time domain (FDTD) method. Both types of wave polarization (perpendicular and parallel) will be discussed. The obtained results conflrm the importance of performing a thermal analysis along with the dosimetric one. It is found that the induced temperature elevation in the brain region, in all the examined conditions, never exceeds 0.4 - C. This value is well below the threshold for the induction of adverse thermal efiects to the neurons which is 3.5 - C.
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