Second Place Poster Award: Yijan Gong

Published on: Sep 29, 2013

Life Time Dosimetric Assessment for Mice and Rats Exposed to Cell Phone Radiation

Yijian Gong1, Myles Capstick, Niels Kuster, David L. McCormick, Thomas Horn & Perry Wilson

1IT'IS Foundation, Zurich, Switzerland, CH-8004

Yijian Gong is a PhD Student in IT’IS Foundation, Zurich, Switzerland. Her researches focuses on the development of extended methods to assess the dosimetry of electromagnetic field (EMF) within in-vitro, in-vivo and human studies along with some aspects of the design of exposure systems for performing in-vitro and in-vivo studies. Since the increasing using EMF in various areas such as wireless communications and medical applications, she find her research interesting that it provides more scientific way to quantify the interaction between electromagnetic field and biological tissues. Her work is to develop a methodology to perform dosimetric assessment of SAR values and distributions, including the treatment of uncertainties and variations. It also includes methodology to the assessment of Extremely Low Frequency (ELF) EM exposure, with E field distribution and organ specific analysis inside the humans and animals. She is planning to finish her PhD studies within the next year. And she is looking forward to the challenging chances to continue her career and research further more in the bioelectromagnetic domain.

The projects presented at the 35th annual BEMS meeting ‘Life Time Dosimetric Assessment for Mice and Rats Exposed to Cell Phone Radiation’ is a project performed under the National Toxicology Program of National Institute of Environmental Health Sciences. This program focuses on identifying the potential toxicity and carcinogenicity due to chronic exposure of rodents to cell phone RF electromagnetic fields. The NTP project requires housing a large numbers of unrestrained animals exposed to RF energy 10min on/off, 20 hours per day for 24 months, with different exposure level groups. For this large-scale and long-term exposure, reverberation chambers are used and show a substantial advantage.

Up until now, there has been no application or dosimetric analysis for long term life time exposure of rodents in a large reverberation chamber, which is the main topic of the work. Two methods were used and compared to numerically simulate the reverberation chamber exposure environment. The anatomies of the unrestrained rodents were accurately investigated through life time by various high resolution anatomical models. Furthermore, the life time varying uncertainty evaluates possible SAR variety mainly caused by the rodents’ growth rate, weight deviation and posture. This detailed analysis provides a comprehensive reference for the biological studies for the potential toxicity and carcinogenicity of mobile phone-type signals. The analysis of life time dosimetry will be detailed presented in the complete paper in the near future.

This work was funded by the National Toxicology Program of NIEHS.