Hirata Akimasa, Wake Kanako, Watanabe Soichi, Taki Masao
National Institute of Information and Communications Technology, EMC group, Tokyo, Japan.
Radiat Prot Dosimetry. 2009 Aug;135(4):272-5. doi: 10.1093/rpd/ncp117.
The present study quantified the in situ electric field and induced current density in anatomically based numeric Japanese male and female models for exposure to extremely low-frequency magnetic fields. A quasi-static FDTD method was applied to analyse this problem. The computational results obtained herein reveal that the 99 th percentile value of the in situ electric field in the nerve tissue and the current density averaged over an area of 1 cm(2) of the nerve tissue (excluding non-nerve tissues in the averaging region) in the female models were less than 35 and 25 %, respectively. These induced quantities in the Japanese models were smaller than those for European models reported in a previous study, which is mainly due to the difference in cross-sectional area of the body.
本研究对基于解剖学的日本男性和女性数字模型暴露于极低频磁场时的原位电场和感应电流密度进行了量化。采用准静态时域有限差分法(FDTD)来分析此问题。本文获得的计算结果表明,女性模型中神经组织中原位电场的第99百分位值以及神经组织1平方厘米区域(平均区域中不包括非神经组织)上平均的电流密度分别小于35%和25%。日本模型中的这些感应量小于先前研究中报道的欧洲模型的感应量,这主要是由于身体横截面积的差异。