Analysis of the influence of handset phone position on RF exposure of brain tissue
| Autor: | Amal Ghanmi, Nadège Varsier, Joe Wiart, Odile Picon, Emmanuelle Conil, Abdelhamid Hadjem |
|---|---|
| Rok vydání: | 2014 |
| Předmět: |
Physiology
business.industry Computer science Biophysics Specific absorption rate 020206 networking & telecommunications 02 engineering and technology General Medicine Handset Radio spectrum 030218 nuclear medicine & medical imaging law.invention 03 medical and health sciences 0302 clinical medicine law Phone GSM Position (vector) Mobile phone 0202 electrical engineering electronic engineering information engineering Radiology Nuclear Medicine and imaging Computer vision Artificial intelligence Radio frequency business |
| Zdroj: | Bioelectromagnetics. 35:568-579 |
| ISSN: | 0197-8462 |
| Popis: | Exposure to mobile phone radio frequency (RF) electromagnetic fields depends on many different parameters. For epidemiological studies investigating the risk of brain cancer linked to RF exposure from mobile phones, it is of great interest to characterize brain tissue exposure and to know which parameters this exposure is sensitive to. One such parameter is the position of the phone during communication. In this article, we analyze the influence of the phone position on the brain exposure by comparing the specific absorption rate (SAR) induced in the head by two different mobile phone models operating in Global System for Mobile Communications (GSM) frequency bands. To achieve this objective, 80 different phone positions were chosen using an experiment based on the Latin hypercube sampling (LHS) to select a representative set of positions. The averaged SAR over 10 g (SAR10 g) in the head, the averaged SAR over 1 g (SAR1 g ) in the brain, and the averaged SAR in different anatomical brain structures were estimated at 900 and 1800 MHz for the 80 positions. The results illustrate that SAR distributions inside the brain area are sensitive to the position of the mobile phone relative to the head. The results also show that for 5-10% of the studied positions the SAR10 g in the head and the SAR1 g in the brain can be 20% higher than the SAR estimated for the standard cheek position and that the Specific Anthropomorphic Mannequin (SAM) model is conservative for 95% of all the studied positions. |
| Databáze: | OpenAIRE |
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