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Setup and dosimetry for exposing anaesthetised pigs in vivo to 900 MHz GSM mobile phone fields
Author(s) -
Toivonen Tommi,
Toivo Tim,
Pitkäaho Risto,
Puranen Lauri,
Silfverhuth Minna,
Mennander Ari,
Hannula Markus,
Hyttinen Jari,
Jokela Kari
Publication year - 2008
Publication title -
bioelectromagnetics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.435
H-Index - 81
eISSN - 1521-186X
pISSN - 0197-8462
DOI - 10.1002/bem.20404
Subject(s) - gsm , in vivo , mobile phone , dosimetry , cellular radio , bioelectromagnetics , computer science , telecommunications , physics , medicine , electromagnetic field , biology , nuclear medicine , base station , quantum mechanics , microbiology and biotechnology
The aim of this study was a dosimetrical analysis of the setup used in the exposure of the heads of domestic pigs to GSM‐modulated radio frequency electromagnetic fields (RF‐EMF) at 900 MHz. The heads of pigs were irradiated with a half wave dipole using three different exposure routines; short bursts of 1–3 s at two different exposure levels and a continuous 10‐min exposure. The electroencephalogram (EEG) was registered continuously during the exposures to search for RF‐EMF originated changes. The dosimetry was based on simulations with the anatomical heterogeneous numerical model of the pig head. The simulation results were validated by experimental measurements with the exposure dipole and a homogeneous liquid phantom resembling the pig head. The specific absorption rate (SAR), defined as a maximum average over 10 g tissue mass (SAR 10g ), was 7.3 W/kg for the first set of short bursts and 31 W/kg for the second set of short bursts. The SAR 10g in the continuous 10‐min exposure was 31 W/kg. The estimated uncertainty for the dosimetry was ±25% ( K = 2). Bioelectromagnetics 29:363–370, 2008. © 2008 Wiley‐Liss, Inc.