title: Comparison of radiofrequency exposure of a mouse dam and foetuses at 900 MHz.
abstract: In vivo studies involving radiofrequency (RF) exposure of rodents require detailed dosimetric analysis to enable correct interpretation of biological outcomes. Detailed anatomical models of mice--a female, a pregnant female, a male and a foetus--have been developed for analyses using finite difference numerical techniques. The mouse models, consisting of 49 tissues, will be made freely available to the research community. In this note, the pregnant mouse model, which included eight mature foetuses, was utilized specifically to consider (a) the RF dosimetry in a radial cavity exposure system operated at a frequency of 900 MHz and (b) a 900 MHz plane wave exposure. A comparison was made between the exposure of the mouse dam and the foetuses as specified by the specific energy absorption rate (SAR) and the resultant temperature change. In general, the SAR levels in the foetuses were determined to be slightly lower (around 14% lower than the average values of the dam) and the peak temperature increase was significantly lower (45%) than the values in the dam.
authors.affiliation: Australian Centre for Radiofrequency Bioeffects Research, Hawthorn, VIC, 3122, Australia. robert.l.mcintosh@team.telstra.com
authors.forename: Robert L
authors.initials: RL
authors.lastname: McIntosh
authors.forename: Lauren
authors.initials: L
authors.lastname: Deppeler
authors.forename: Megan
authors.initials: M
authors.lastname: Oliva
authors.forename: John
authors.initials: J
authors.lastname: Parente
authors.forename: Faiyaz
authors.initials: F
authors.lastname: Tambuwala
authors.forename: Stephen
authors.initials: S
authors.lastname: Turner
authors.forename: David
authors.initials: D
authors.lastname: Winship
authors.forename: Andrew W
authors.initials: AW
authors.lastname: Wood
mesh_terms: D000042:Absorption; D000818:Animals; D003198:Computer Simulation; D005260:Female; D005333:Fetus / Q000528:radiation effects*; D051379:Mice; D008953:Models, Anatomic; D008954:Models, Biological; D009035:Mothers; D011247:Pregnancy; D011846:Radio Waves; D011874:Radiometry; D013696:Temperature; D014867:Water
chemical_list: D014867:Water