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Present knowledge about specific absorption rates inside a human body exposed to radiofrequency electromagnetic
Health Physics
|February 1, 1995
Summary
This study compares human body specific absorption rates (SAR) to safety standards, aiding personal protection against radiofrequency fields. More dosimetric data is needed for frequencies below 3 MHz.
Area of Science:
- Electromagnetism
- Biophysics
- Occupational Health
Background:
- Scientific investigations explore the relationship between external field strengths and specific absorption rates (SAR) in the human body.
- Current safety standards are based on normalized SAR values.
- Understanding these relationships is crucial for establishing reliable personal protection levels.
Purpose of the Study:
- To compare compiled SAR data with existing safety standards.
- To provide a reference for selecting personal protection levels against thermal effects from radiofrequency electromagnetic fields.
- To highlight data gaps in dosimetry below 3 MHz.
Main Methods:
- Compilation and normalization of scientific investigation results for SAR values.
- Comparison of normalized SAR values against established exposure limits.
- Analysis of existing dosimetric data for radiofrequency electromagnetic fields.
Main Results:
- Compiled SAR data were normalized to values forming the basis of current safety standards.
- Results were compared to existing exposure limits.
- A scarcity of dosimetric data was identified for frequencies below 3 MHz.
Conclusions:
- The comparison serves as a reference for selecting reliable personal protection levels against thermal effects.
- Monitoring ankle/wrist currents may be necessary for protecting exposed workers.
- Further research is needed to address the lack of dosimetric data below 3 MHz.