title: Setup and dosimetry for exposing anaesthetised pigs in vivo to 900 MHz GSM mobile phone fields.
abstract: 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).
authors.affiliation: STUK-Radiation and Nuclear Safety Authority, Helsinki, Finland. tommi.toivonen@stuk.fi
authors.forename: Tommi
authors.initials: T
authors.lastname: Toivonen
authors.forename: Tim
authors.initials: T
authors.lastname: Toivo
authors.forename: Risto
authors.initials: R
authors.lastname: Pitkäaho
authors.forename: Lauri
authors.initials: L
authors.lastname: Puranen
authors.forename: Minna
authors.initials: M
authors.lastname: Silfverhuth
authors.forename: Ari
authors.initials: A
authors.lastname: Mennander
authors.forename: Markus
authors.initials: M
authors.lastname: Hannula
authors.forename: Jari
authors.initials: J
authors.lastname: Hyttinen
authors.forename: Kari
authors.initials: K
authors.lastname: Jokela
mesh_terms: D000758:Anesthesia; D000818:Animals; D040421:Cell Phone; D004781:Environmental Exposure; D004867:Equipment Design; D019544:Equipment Failure Analysis; D006257:Head / Q000502:physiology* / Q000528:radiation effects*; D008872:Microwaves; D011874:Radiometry / Q000295:instrumentation* / Q000379:methods; D013552:Swine