ID Number		884
Study Type		Engineering & Physics
Model		1-500 MHz exposure to various tissues and analysis of dielectric properties
Details		Tissue property measurements (permittivity and conductivity) of human RBCs and fetal tissues (skin, muscle, heart, lung, liver, kidney, spleen, and brain) were made at 1-500 MHz. Permittivity values in human RBCs ranged from 1700 at 1 MHz and decreased to 310 at 10 MHz and 62 at 100 MHz. Conductivity increased monotonically with frequency over a 2-fold range. Neither gender or blood type had a significant effect on tissue properties, but age (>49 yrs) resulted in a drop in dielectric values. The authors suggest increased disease such as arteriosclerosis and myocardial infarction may be related to the tissue property changes as a result of decreased surface charge on the RBCs. In fetal tissues, permittivity values decreased and conductivity values increased monotonically with increasing frequency. The values were largely comparable to those of adult humans or human mammary tissues, although some differences in lung, liver, and brain tissues at lower frequencies were observed.
Findings		Not Applicable to Bioeffects
Status		Completed With Publication
Principal Investigator		Peking Union Medical College, China
Funding Agency		CDC / NIEHS, China
Country		CHINA
References		Lu, Y et al. Bioelectromagnetics, (1994) 15:589-591
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