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DOSIMETRIC VARIATION IN HUMAN EXPOSURE TO 20 MHZ-3 GHZ ELECTROMAGNETIC FIELDS DUE TO CHANGES IN DIELECTRIC PROPERTIES. 2017

Jiamin Wang, and Bingxin Chen, and Hongxing Qi, and Jie Zhang, and Shude Chen, and Xianghui Wang
Department of Physics, East China Normal University, Shanghai 200241, China.

Specific energy absorption rate (SAR) is often used to assess human exposure to electromagnetic radiation. SAR is strongly related to incident field parameters, characteristics of the body exposed, ground effects and other factors. In this study, changes in dielectric properties, due to health and age status, were taken into account in the simulation of SAR in a Chinese male model exposed to eight orthogonal plane-wave configurations at the frequency range of 20 MHz-3 GHz. The results show that changes in dielectric properties can cause variations in SAR. Moreover, the variation in SAR was influenced by frequency, electric polarisation and incident direction. Therefore, it is of great significance to distinguish the frequency and exposure configuration when a change in dielectric properties is applied in the evaluation of SAR. In addition, more general cases with a random change in dielectric properties should be performed, which are more realistic.

UI MeSH Term Description Entries
D008297 Male Males
D011829 Radiation Dosage The amount of radiation energy that is deposited in a unit mass of material, such as tissues of plants or animal. In RADIOTHERAPY, radiation dosage is expressed in gray units (Gy). In RADIOLOGIC HEALTH, the dosage is expressed by the product of absorbed dose (Gy) and quality factor (a function of linear energy transfer), and is called radiation dose equivalent in sievert units (Sv). Sievert Units,Dosage, Radiation,Gray Units,Gy Radiation,Sv Radiation Dose Equivalent,Dosages, Radiation,Radiation Dosages,Units, Gray,Units, Sievert
D011874 Radiometry The measurement of radiation by photography, as in x-ray film and film badge, by Geiger-Mueller tube, and by SCINTILLATION COUNTING. Geiger-Mueller Counters,Nuclear Track Detection,Radiation Dosimetry,Dosimetry, Radiation,Geiger Counter,Geiger-Mueller Counter Tube,Geiger-Mueller Probe,Geiger-Mueller Tube,Radiation Counter,Counter Tube, Geiger-Mueller,Counter Tubes, Geiger-Mueller,Counter, Geiger,Counter, Radiation,Counters, Geiger,Counters, Geiger-Mueller,Counters, Radiation,Detection, Nuclear Track,Dosimetries, Radiation,Geiger Counters,Geiger Mueller Counter Tube,Geiger Mueller Counters,Geiger Mueller Probe,Geiger Mueller Tube,Geiger-Mueller Counter Tubes,Geiger-Mueller Probes,Geiger-Mueller Tubes,Probe, Geiger-Mueller,Probes, Geiger-Mueller,Radiation Counters,Radiation Dosimetries,Tube, Geiger-Mueller,Tube, Geiger-Mueller Counter,Tubes, Geiger-Mueller,Tubes, Geiger-Mueller Counter
D003198 Computer Simulation Computer-based representation of physical systems and phenomena such as chemical processes. Computational Modeling,Computational Modelling,Computer Models,In silico Modeling,In silico Models,In silico Simulation,Models, Computer,Computerized Models,Computer Model,Computer Simulations,Computerized Model,In silico Model,Model, Computer,Model, Computerized,Model, In silico,Modeling, Computational,Modeling, In silico,Modelling, Computational,Simulation, Computer,Simulation, In silico,Simulations, Computer
D004574 Electromagnetic Fields Fields representing the joint interplay of electric and magnetic forces. Electromagnetic Field,Field, Electromagnetic,Fields, Electromagnetic
D004781 Environmental Exposure The exposure to potentially harmful chemical, physical, or biological agents in the environment or to environmental factors that may include ionizing radiation, pathogenic organisms, or toxic chemicals. Exposure, Environmental,Environmental Exposures,Exposures, Environmental
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D018594 Human Body The human being as a non-anatomical and non-zoological entity. The emphasis is on the philosophical or artistic treatment of the human being, and includes lay and social attitudes toward the body in history. (From J. Cassedy, NLM History of Medicine Division) Body, Human,Human Figure,Body Parts,Body Parts and Fluids,Bodies, Human,Figure, Human,Figures, Human,Human Bodies,Human Figures,Parts, Body

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