title: SAR and temperature distribution in the rat head model exposed to electromagnetic field radiation by 900 MHz dipole antenna.
abstract: Rats are often used in the electromagnetic field (EMF) exposure experiments. In the study for the effect of 900 MHz EMF exposure on learning and memory in SD rats, the specific absorption rate (SAR) and the temperature rise in the rat head are numerically evaluated. The digital anatomical model of a SD rat is reconstructed with the MRI images. Numerical method as finite difference time domain has been applied to assess the SAR and the temperature rise during the exposure. Measurements and simulations are conducted to characterize the net radiated power of the dipole to provide a precise dosimetric result. The whole-body average SAR and the localized SAR averaging over 1, 0.5 and 0.05 g mass for different organs/tissues are given. It reveals that during the given exposure experiment setup, no significant temperature rise occurs. The reconstructed anatomical rat model could be used in the EMF simulation and the dosimetric result provides useful information for the biological effect studies.
authors.affiliation: College of Life Science and Bioengineering, Beijing University of Technology, China.
authors.forename: Lei
authors.initials: L
authors.lastname: Yang
authors.forename: Dongmei
authors.initials: D
authors.lastname: Hao
authors.forename: Shuicai
authors.initials: S
authors.lastname: Wu
authors.forename: Rugang
authors.initials: R
authors.lastname: Zhong
authors.forename: Yanjun
authors.initials: Y
authors.lastname: Zeng
mesh_terms: D000818:Animals; D001822:Body Burden; D001831:Body Temperature / Q000502:physiology* / Q000528:radiation effects*; D001921:Brain / Q000502:physiology* / Q000528:radiation effects*; D003198:Computer Simulation; D004574:Electromagnetic Fields; D004781:Environmental Exposure / Q000032:analysis; D006257:Head / Q000502:physiology* / Q000528:radiation effects*; D008297:Male; D008872:Microwaves; D008954:Models, Biological; D009928:Organ Specificity / Q000502:physiology / Q000528:radiation effects; D011829:Radiation Dosage; D011874:Radiometry / Q000379:methods; D051381:Rats