|
EMF Study
(Database last updated on Mar 27, 2024)
ID Number |
|
1593 |
Study Type |
|
Engineering & Physics |
Model |
|
900 MHz (GSM), 2 GHz (UMTS) and modeling of SAR distribution using human FDTD models (including child vs adult and delicate organs e.g., eyes, inner ear, pineal gland) |
Details |
|
Numerical modeling of mobile phone exposure (900 MHz GSM, 2 GHz UMTS) on anatomically small and delicate organ structures of the head (e.g. eyes, inner ear, pineal gland). Temporal and spatial temperature distributions and the effects of different head geometries (adults and children) are analyzed. An initial study looked at the middle and inner ear (eardrum, auditory ossicles, tympanic cavity, cochlea, vestibulim, semicircular canals, and vestibulocochlear nerve) using slices from a frozen human cadaver over a RF frequency range from 400 MHz - 6 GHz. The authors report values, and provide RF power values required to meet existing exposure standards (IEEE C95.1 and ICNIRP). In particular, the peri/endolymphatic liquid had higher conductivity (and thus SAR per unit power) than other surrounding tissues - but due to depth of tissue it was more dramatic at lower (e.g., 400 MHz) frequencies. They conclude that even with the increased conductivity, it is unlikely that current mobile phones or radios would fail existing safety standards due to the separation distance. A related paper measured dielectric properties of pineal gland tissue from humans and calculated SAR using typical mobile phone transmiter power, and again concluded SAR values well within the current limits. |
Findings |
|
Not Applicable to Bioeffects |
Status |
|
Completed With Publication |
Principal Investigator |
|
ARC Seibersdorf Research, Germany
|
Funding Agency |
|
BfS, Germany, DMF, Germany
|
Country |
|
GERMANY |
References |
|
Schmid, G et al. Phys Med Biol, (2007) 52:5457-5468
Schmid, G et al. Phys Med Biol, (2007) 52:1771-1781
|
Comments |
|
|
Return
|