RF Radiation Absorption Patterns: Human and Animal Modeling Data
Arthur W. Guy, Michael D. Webb, John A. McDougall · 1977
This 1977 NIOSH report found that thermographic measurements in models of animals and humans exposed to RF fields supported extrapolating animal exposure thresholds to humans at 10 to 300 MHz.
Plain English Summary
This 1977 NIOSH technical report by Guy, Webb and McDougall of the University of Washington exposed models of animals and humans to RF fields produced by differing sources. Power absorption patterns and the rate of power absorption at specific anatomical locations within the models were thermographically recorded under simulated RF industrial exposure conditions using a near-field synthesizer. The results demonstrate the validity of the technique for predicting the magnitude and distribution of RF-induced power absorption in humans and animals, and for extrapolating from animal data to human RF exposure thresholds at 10 to 300 MHz.
Why This Matters
This NIOSH report addresses a research gap: the OSHA RF/Microwave exposure regulation covers 10 MHz to 100 GHz, yet little was known about biological effects from 10 to 300 MHz, where the vast majority of industrial sources operate. Because animals are used in RF bioeffects research, extrapolation from animal to human exposure thresholds is necessary, and the report examines the relationship between RF-induced power absorption patterns in humans and animals under various exposure conditions. It concludes that the modeling technique for extrapolating from animal exposure thresholds to human thresholds is valid and reliable for RF radiation at 10-300 MHz.
Finding
The results of the modeling research demonstrate the validity of this technique for predicting the magnitude and distribution of RF-induced power absorption in humans and animals. The utility of the technique for extrapolation to human RF exposure thresholds from animal data was firmly established.
In their words
“The results of the modeling research demonstrate the validity of this technique for predicting the magnitude and distribution of RF-induced power absorption in humans and animals. The utility of the technique for extrapolation to human RF exposure thresholds from animal data was firmly established.”
Exposure Information
Specific exposure levels were not quantified in this study.
Study Details
To determine human RF exposure thresholds from 10 to 300 MHz by establishing the relationship between RF-induced power absorption patterns in humans and animals under various exposure conditions.
Various models of animals and humans were exposed to RF fields produced by differing sources. Power ...
The results of the modeling research demonstrate the validity of this technique for predicting the m...
The modeling technique for extrapolating from animal exposure thresholds to human thresholds is valid and reliable for RF (10-300 MHz) radiation. The relationship between RF-induced power absorption patterns in humans and animals was successfully reproduced under various exposure conditions.
Show BibTeX
@article{rf_radiation_absorption_patterns_human_and_animal_modeling_data_g4419,
author = {Arthur W. Guy and Michael D. Webb and John A. McDougall},
title = {RF Radiation Absorption Patterns: Human and Animal Modeling Data},
year = {1977},
}