Empirical study on specific absorption rate of head tissues due to induced heating of 4G cell phone radiation

Authors: Christopher B, Mary YS, Khandaker MU, Jojo PJ

Year: Published online Apr 4, 2020

Category: Radiation Physics and Chemistry

Journal: Radiation Physics and Chemistry

DOI: https://doi.org/10.1016/j.radphyschem.2020.108910

URL: https://www.sciencedirect.com/science/article/abs/pii/S0969806X20302085

Abstract

Overview

Exposures to electromagnetic radiation, primarily from prolonged mobile phone use, can initiate biological damage at the macromolecular level within the human body. This empirical study focuses on the thermal changes and specific absorption rates (SAR) in brain, eye, and skin tissues due to this extended exposure.

Methodology

The study used a phantom simulating a human head composed of skin, skull, and brain tissues. Exposure to radiation lasted for durations extending 600 seconds and more, with temperature variations measured at specific points using sensitive thermocouple probes.

Findings

The average increase in brain temperature was 0.10 +/- 0.05 °C at a depth of 30 mm, with an estimated SAR of 0.66 +/- 0.35 Wkg-1.
Temperature increase in the eye socket was 0.03 +/- 0.02 °C, with an SAR of 0.15 +/- 0.08 Wkg-1.
The skin temperature rose by an average of 0.14 +/- 0.05 °C, corresponding to an SAR of 0.66 +/- 0.42 Wkg-1.

Conclusion

Although the measured SAR values are within the safe limit of 2 Wkg-1 as recommended by international regulatory bodies, the cumulative effects of prolonged mobile phone use could pose significant health risks, especially considering the rapid increase in mobile phone usage for communication purposes.

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