Study type: Medical/biological study (experimental study)

Cardiovascular and thermal responses in rats during 94 GHz irradiation med./bio.

By: Jauchem JR, Ryan KL, Frei MR
Published in: Bioelectromagnetics 1999; 20 (4): 264-267
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Aim of study (acc. to author)

To examine the effects of exposure to 94 GHz radiofrequency electromagnetic radiation on heart rate, mean arterial blood pressure, respiratory rate, localized body temperature changes, and survival times in anesthetized rats.

Endpoint

Exposure

Exposure Parameters
Exposure 1: 94 GHz
Modulation type: CW
Exposure duration: 38.8 ± 1.9 min (unshaved) and 41.1 ± 2.1 min (shaved), starting at a colon temperature of 37°C until death

General information

In one group of rats (n=8) the skin area on the left side was shaved from forelimb to lind limb and from dorsal midline to ventral midline. Another group (n=8) was not shaved.

Exposure 1

Main characteristics
Frequency 94 GHz
Type
Waveform
Charakteristic
Exposure duration 38.8 ± 1.9 min (unshaved) and 41.1 ± 2.1 min (shaved), starting at a colon temperature of 37°C until death
Modulation
Modulation type CW
Exposure setup
Exposure source
  • corrugated cylindrical horn (10cm long, OD 3cm ID 2,5cm)
Distance between exposed object and exposure source 0.5 m
Chamber Anechoic chamber (27°C ± 0.5°C, 20% ± 5% humidity)
Setup Animals were exposed individually in E-orientation.
Parameters
Measurand Value Type Method Mass Remarks
SAR 12 mW/g mean calculated whole body -
power density 750 W/m² mean measured - -

Exposed system:

Methods Endpoint/measurement parameters/methodology

Investigated system:
Investigated organ system:
Time of investigation:
  • during exposure

Main outcome of study (acc. to author)

Exposure to 94 GHz radiofrequency electromagnetic radiation produces extreme peripheral heating without similar levels of core heating and this pattern of heat deposition is sufficient to produce circulatory failure and subsequent death.

Study character:

Study funded by