NDLI: SAR assessment using tissues Homogenization Technique

Content Provider	IEEE Xplore Digital Library
Author	Pradier, A. Lacroux, F. Lautru, D. Wong, M.F. Fouad Hanna, V. Wiart, J.
Copyright Year	2006
Description	Author affiliation: France Telecom R&D, RESA/FACE, 38-40, Rue du Général Leclerc, 92794 Issy Les Moulineaux Cedex 09, France (Pradier, A.; Lacroux, F.; Wong, M.F.; Wiart, J.) \|\| Université Pierre et Marie Curie Paris 6, EA 2385 - LISIF, BC 252 - 4 place Jussieu, F-75005, France (Lautru, D.; Fouad Hanna, V.)
Abstract	This paper presents a new approach which allows reducing the computation time as well as the memory requirement. Dealing with SAR assessment the resolution often used nowadays is the millimetre resolution of Magnetic Resonance Imaging (MRI) techniques. Such resolution complies with the numerical constraints up to 5GHz but requires large memory and induces important computation time. Using homogenized tissues and larger grid for the electric field calculation and non homogenized tissues for the conductivity and density the Specific Absorption Rate (SAR) can by estimated with a limited reduction of accuracy. This Tissues Homogenization Technique (THT) has been analyzed with a 1D multilayer structure exposed to a plane wave and to a dipole operated at 900MHz and applied to a 3D child head model exposed to a plane wave. This THT approach allows relaxing the constraints on the grid size of simulations performed with the finite difference in time domain with a limited impact on the accuracy of simulations.
Starting Page	1
Ending Page	4
File Size	533515
Page Count	4
File Format	PDF
ISBN	9789290929376
DOI	10.1109/EUCAP.2006.4584518
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-11-06
Publisher Place	France
Access Restriction	Subscribed
Rights Holder	ESA
Subject Keyword	Magnetic resonance imaging Biological system modeling Computational modeling Humans Conductivity Nonhomogeneous media Specific absorption rate Magnetic heads Electromagnetic fields Finite difference methods
Content Type	Text
Resource Type	Article

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