Whole-body exposure of unrestrained small animals to electromagnetic field

Ph.D. student: Ph.D. student: Ing. Lukáš VíšekIng. Lukáš VíšekSupervisor: Supervisor: Ing. Ladislav OpplIng. Ladislav Oppl,, Ph.D. Ph.D.Supervisor specialist: Prof. Jan Vrba, CSc.Supervisor specialist: Prof. Jan Vrba, CSc.

CTU in Prague, Dept. of EM fieldCTU in Prague, Dept. of EM fieldvisekl1@fel.cvut.czvisekl1@fel.cvut.cz, , oppl@fel.cvut.cz, vrba@fel.cvut.cz

Outline

Introduction Motivation of doctoral work Exposure system

Introduction

rapidly increased use of wireless personal communication systems (mobile phones, wireless networks, pagers, GPS, etc.)

public concern about the health hazards of radiofrequency EM fields

in vivo and in vitro studies have been conducted

Motivation

the aim - to design, implement and analyze a new type of the whole-body exposure system for biological experiments

novel method to determine an accurate exposure together with the elimination of external influences which can affect results

cooperation with Department of Pathophysiology of Faculty of Medicine in Pilsen, Charles University in Prague

Desired parameters

free movement of animals elimination of stress

uniform exposure accurate dosimetry

low cost, i.e. reduced cost of construction

Exposure system

circular waveguide chamber terminated by matched loads

shielding of electromagnetic field circular polarized wave power balance –

analysis of scattering

parameters ventilation holes

Exposure System

verification of the circular polarized wave inside chamber

determination of relationship between average SAR and varies like growth and orientation of animals

numerical determination of average SAR in conjunction with homogenous animal model and experimental validation based on analysis of measured scattering parameters

development of anatomical model for simulations determination of whole-body averaged SAR