Title :
Estimation of variability of specific absorption rate with physical description of children exposed to electromagnetic field in the VHF band
Author :
Nagaoka, T. ; Watanabe, S.
Author_Institution :
Nat. Inst. of Inf. & Commun. Technol., Koganei, Japan
Abstract :
Recently, there has been an increasing concern regarding the effects of electromagnetic waves on the health of humans. The safety of radio frequency electromagnetic fields (RF-EMFs) is evaluated by the specific absorption rate (SAR). In recent years, SAR has been estimated by numerical simulation using fine-resolution and anatomically realistic reference whole-body voxel models of people of various ages. The variation in SAR with a change in the physical features of a real person is hardly studied, although every person has different physical features. In this study, in order to estimate the individual variability in SAR of persons, we obtained considerable 3D body shape data from actual three-year-old children and developed several homogeneous models of these children. The variability in SAR of the homogeneous models of three-year-old children for whole-body exposure to RF electromagnetic fields in the very high frequency (VHF) band calculated using the finite-difference time-domain method has been described.
Keywords :
biological effects of fields; finite difference time-domain analysis; 3D body shape data; children; finite difference time domain method; human health; radiofrequency electromagnetic field exposure; specific absorption rate; variability estimation; Body Burden; Body Size; Child, Preschool; Computer Simulation; Electromagnetic Fields; Environmental Exposure; Female; Humans; Male; Models, Anatomic; Models, Biological; Radio Waves; Relative Biological Effectiveness; Reproducibility of Results; Sensitivity and Specificity; Whole-Body Counting;
Conference_Titel :
Engineering in Medicine and Biology Society, 2009. EMBC 2009. Annual International Conference of the IEEE
Conference_Location :
Minneapolis, MN
Print_ISBN :
978-1-4244-3296-7
Electronic_ISBN :
1557-170X
DOI :
10.1109/IEMBS.2009.5333598