The effect of increase in dielectric values on specific absorption rate (SAR) in eye and head tissues following 900, 1800 and 2450 MHz radio frequency (RF) exposure

Physics in Medicine and Biology
J KeshvariS Lang

Abstract

Numerous studies have attempted to address the question of the RF energy absorption difference between children and adults using computational methods. They have assumed the same dielectric parameters for child and adult head models in SAR calculations. This has been criticized by many researchers who have stated that child organs are not fully developed, their anatomy is different and also their tissue composition is slightly different with higher water content. Higher water content would affect dielectric values, which in turn would have an effect on RF energy absorption. The objective of this study was to investigate possible variation in specific absorption rate (SAR) in the head region of children and adults by applying the finite-difference time-domain (FDTD) method and using anatomically correct child and adult head models. In the calculations, the conductivity and permittivity of all tissues were increased from 5 to 20% but using otherwise the same exposure conditions. A half-wave dipole antenna was used as an exposure source to minimize the uncertainties of the positioning of a real mobile device and making the simulations easily replicable. Common mobile telephony frequencies of 900, 1800 and 2450 MHz were used in thi...Continue Reading

References

Jun 23, 2001·Physics in Medicine and Biology·A PeymanC Gabriel
Sep 6, 2005·Bioelectromagnetics·Andreas Christ, Niels Kuster

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Citations

Feb 26, 2010·Journal of Toxicology and Environmental Health. Part B, Critical Reviews·Riadh W Y HabashFrank S Prato
Feb 5, 2010·Computational Intelligence and Neuroscience·Katrina WendelJaakko Malmivuo
May 30, 2009·International Journal of Pediatric Otorhinolaryngology·Gürer G BudakNesrin Seyhan
Dec 26, 2008·International Journal of Pediatric Otorhinolaryngology·Gürer G BudakNesrin Seyhan
Oct 4, 2006·Bioelectromagnetics·C-K Chou
Apr 25, 2013·Bioelectromagnetics·Serena FiocchiTheodoros Samaras
Jun 24, 2014·IEEE Transactions on Bio-medical Engineering·Serena FiocchiPaolo Ravazzani
Sep 25, 2009·IEEE Transactions on Information Technology in Biomedicine : a Publication of the IEEE Engineering in Medicine and Biology Society·L S XuChao Hu
Sep 11, 2014·Journal of Toxicology and Environmental Health. Part B, Critical Reviews·Mary Redmayne, Olle Johansson
Apr 1, 2007·Concepts in Magnetic Resonance. Part B, Magnetic Resonance Engineering·Weihua MaoChristopher M Collins
Jun 20, 2008·Physics in Medicine and Biology·J WiartI Bloch
Nov 21, 2019·Bioelectromagnetics·Marta FernandezAmaia Arrinda

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