Variation of the dielectric properties of tissues with age: The effect on the values of SAR in children when exposed to walkie-talkie devices

Azadeh Peyman*, C. Gabriel, E. H. Grant, G. Vermeeren, L. Martens

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

136 Citations (Scopus)

Abstract

In vitro dielectric properties of ageing porcine tissues were measured in the frequency range of 50 MHz-20 GHz, and the total combined uncertainties of the measurements were assessed. The results show statistically significant reduction with age in both permittivity and conductivity of 10 out of 15 measured tissues. At microwave frequencies, the observed variations are mainly due to the reduction in the water content of tissues as an animal ages. The results obtained were then used to calculate the SAR values in children of age 3 and 7 years when they are exposed to RF induced by walkie-talkie devices. No significant differences between the SAR values for the children of either age or for adults were observed.

Original languageEnglish
Pages (from-to)227-241
Number of pages15
JournalPhysics in Medicine and Biology
Volume54
Issue number2
DOIs
Publication statusPublished - 21 Jan 2009

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