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CST – Computer Simulation Technology

Title:
Modeling of the internal fields distribution in human inner hearing system exposed to 900 and 1800 MHz
Author(s):
Marta Parazzini, Gabriella Tognola, Claudia Franzoni, Ferdinando Grandori, Paolo Ravazzani
Source:
IEEE Transactions on Biomedical Engineering
Vol./Issue/Date:
Volume: 54, Issue: 1, Jan. 2007
Year:
2007
Page(s):
39-48
Keywords:
Finite integration technique, inner hearing system, mobile phones exposure, numerical dosimetry
Abstract:
This paper investigates the internal electric and magnetic field distribution and the specific absorption rate (SAR) values in a magnetic resonance imaging-based model of the inner hearing system exposed to 900 and 1800 MHz. The internal fields distributions were calculated using the Finite Integration Technique. The estimation of the field values was evaluated along lines passing through that target organ, specifically from the vestibular to the cochlear region and from the apex to the base of the cochlea. The specific findings are: 1) higher internal fields strength and SAR value in the vestibular region rather than in the auditory region, especially for the inner ear closer to the external source; 2) higher internal fields strength in the basal and apical region of the cochlea than in the middle one; 3) local differences in the internal fields distribution and SAR value, comparing the head models including or not the inner auditory system model; 4) results’ variability evaluated by changing the head-source mutual position and the dielectric properties of the inner hearing system.
Document:

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