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Brain Absorption of Mobile Phone Radiation    
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Brain Absorption of Mobile Phone Radiation
vrijdag, 18 december 2015 - Dossier: Algemeen


Bron: ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=7335557

Received September 9, 2015, accepted October 29, 2015, date of publication November 23, 2015,
December 10, 2015.

Dosimetric Simulations of Brain Absorption of Mobile Phone Radiation—The Relationship
Between psSAR and Age


Claudio Enrique Fernandes-Rodriguez1, Alvaro Augusto Almeida de Salles2, and Devra Lee Davis3
1Federal Institute of Education, Science and Technology of Rio Grande do Sul, Canoas 92412-240, Brazil
2Electrical Engineering Department, Universidade Federal do Rio Grande do Sul, Porto Alegre 90040-060, Brazil
3Environmental Health Trust, Teton Village, WY 83025, USA
Corresponding author: C. E. Fernández-Rodríguez  claudio.fernandez@canoas.ifrs.edu.br)">(claudio.fernandez@canoas.ifrs.edu.br)

This work was supported by Environmental Health Trust.

ABSTRACT As children develop, they differ from adults in a number of important ways, including anatomy, metabolism, immune system, and the extent of myelination of the nervous system. As a consequence, equivalent exposures to radiation from mobile phones result in different doses to specific tissues in children compared with adults. Higher doses are likely to have more severe implications in the young. A young child’s skull is not only smaller and thinner than an adult’s, but also has dielectric characteristics closer to those of soft tissues, probably due to a higher water content. The young skull better matches the electromagnetic characteristics of the skin and brain. As a result, finite-difference time-domain (FDTD) simulations confirm field penetration and higher specific absorption rate (SAR) in deeper structures in the young brain. If the peak spatial SAR (psSAR) is modeled in the entire head, as current testing standards recommend, the results for adults and children are equivalent. Our anatomically based evaluations rely on FDTD simulations of different tissues within the brain and confirm that the psSAR in a child’s brain is higher than in an adult’s brain.

INDEX TERMS Specific absorption rate, mobile phone certification, dosimetry, finite-difference time-domain simulation.

Voor het volledige artikel zie de link bovenaan.


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