ID Number		1562
Study Type		Engineering & Physics
Model		450 MHz, 900 MHz, 1.8 GHz, 2 GHz, 5 GHz numerical modeling and dosimetry of animal RF exposure systems
Details		Dosimetric evaluation (experimental and numerical) of a wide variety of animal exposure systems. In support of a study of rats exposed to a 1.6 GHz (PW-11 Hz), RF signal using a near field carousel exposure system, the authors calculated a brain average SAR of ~2.8 W/kg per watt of input power for adults and 5.3 W/kg per watt of input power for juvenile rats. In a study looking at thermal regulatory thresholds in mice, tube restrained B6C3F1 and NMRI mice (including both genders and different weight groups) were exposed to 900 MHz at SARs ranging from 0 to 20 W/kg in a 'Ferris Wheel' exposure setup at 22 +/- 2 degrees C, 30-70% humidity. The authors report thermal regulatory thresholds of in-tube restrained mice between 2 to 5 W/kg, and total breakdown of thermal regulation at 7.7 +/- 1.6 W/kg (NMRI) and 10.1 +/- 4.0 W/kg (B6C3F1). The authors report a clear dependence upon metabolic rate and weight and suggest that there is a risk of thermal breakdown in laboratory experiments of RF exposed tube restrained mice at whole-body SAR levels of greater than 6 W/kg. Additional studies funded by BfS are ongoing at 450 MHz, 900 MHz, 1,8 GHz and 5 GHz
Findings		Not Applicable to Bioeffects
Status		Completed With Publication
Principal Investigator		IT'IS, Switzerland - kuster@itis.ethz.ch
Funding Agency		EU, Swiss Telecom, BfS, Germany, MMF, Nat'l Res Prog, Switzerland (SNSF, NRP57), DMF, Germany
Country		SWITZERLAND
References		Ebert , S et al. Phys Med Biol., (2005) 50:5203-5215
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