[Modélisation numérique réaliste des effets électromagnétiques des téléphones mobiles]
La diffusion croissante des téléphones mobiles rend nécessaire des études précises des effets des ondes émises sur les utilisateurs. Les effets thermiques ont été majoritairement simulés numériquement à partir d'images médicales issues de scanners et de méthodes de différences finies sur grilles cartésiennes, malgré leur faible précision sur des matériaux hautement hétérogènes. Peu d'études s'appuyant sur des reconstructions précises des structures externes et internes des tissus de la tête d'une part, et d'autre part sur des méthodes numériques s'appuyant sur des maillages non-structurés de type éléments finis ont été menées, car la chaine permettant d'obtenir une discrétisation non-structurée à partir d'images médicales manque cruellement. Les résultats présentés ici illustrent quelques avancées récentes dans la génération de maillages non-structurés à partir d'images médicales et dans les calculs utilisant des éléments finis discontinus, tout en comportant quelques aspects prospectifs sur les effets thermiques.
The ever-rising diffusion of cellular phones has brought about an increased concern for the possible consequences of electromagnetic radiation on human health. Possible thermal effects have been investigated, via experimentation or simulation, by several research projects in the last decade. Concerning numerical modeling, the power absorption in a user's head is generally computed using discretized models built from clinical MRI data. The vast majority of such numerical studies have been conducted using Finite Differences Time Domain methods, although strong limitations of their accuracy are due to heterogeneity, poor definition of the detailed structures of head tissues (staircasing effects), etc. In order to propose numerical modeling using Finite Element or Discontinuous Galerkin Time Domain methods, reliable automated tools for the unstructured discretization of human heads are also needed. Results presented in this article aim at filling the gap between human head MRI images and the accurate numerical modeling of wave propagation in biological tissues and its thermal effects.
Mot clés : Électromagnétisme, Tissus hétérogènes, Imagerie médicale, Génération de maillages non-structurés, Méthodes de type Galerkine discontinu
Gilles Scarella 1 ; Olivier Clatz 2 ; Stéphane Lanteri 1 ; Grégory Beaume 1 ; Steve Oudot 2 ; Jean-Philippe Pons 3 ; Sergo Piperno 1 ; Patrick Joly 2 ; Joe Wiart 4
@article{CRPHYS_2006__7_5_501_0,
author = {Gilles Scarella and Olivier Clatz and St\'ephane Lanteri and Gr\'egory Beaume and Steve Oudot and Jean-Philippe Pons and Sergo Piperno and Patrick Joly and Joe Wiart},
title = {Realistic numerical modelling of human head tissue exposure to electromagnetic waves from cellular phones},
journal = {Comptes Rendus. Physique},
pages = {501--508},
publisher = {Elsevier},
volume = {7},
number = {5},
year = {2006},
doi = {10.1016/j.crhy.2006.03.002},
language = {en},
}
TY - JOUR AU - Gilles Scarella AU - Olivier Clatz AU - Stéphane Lanteri AU - Grégory Beaume AU - Steve Oudot AU - Jean-Philippe Pons AU - Sergo Piperno AU - Patrick Joly AU - Joe Wiart TI - Realistic numerical modelling of human head tissue exposure to electromagnetic waves from cellular phones JO - Comptes Rendus. Physique PY - 2006 SP - 501 EP - 508 VL - 7 IS - 5 PB - Elsevier DO - 10.1016/j.crhy.2006.03.002 LA - en ID - CRPHYS_2006__7_5_501_0 ER -
%0 Journal Article %A Gilles Scarella %A Olivier Clatz %A Stéphane Lanteri %A Grégory Beaume %A Steve Oudot %A Jean-Philippe Pons %A Sergo Piperno %A Patrick Joly %A Joe Wiart %T Realistic numerical modelling of human head tissue exposure to electromagnetic waves from cellular phones %J Comptes Rendus. Physique %D 2006 %P 501-508 %V 7 %N 5 %I Elsevier %R 10.1016/j.crhy.2006.03.002 %G en %F CRPHYS_2006__7_5_501_0
Gilles Scarella; Olivier Clatz; Stéphane Lanteri; Grégory Beaume; Steve Oudot; Jean-Philippe Pons; Sergo Piperno; Patrick Joly; Joe Wiart. Realistic numerical modelling of human head tissue exposure to electromagnetic waves from cellular phones. Comptes Rendus. Physique, Volume 7 (2006) no. 5, pp. 501-508. doi : 10.1016/j.crhy.2006.03.002. https://comptes-rendus.academie-sciences.fr/physique/articles/10.1016/j.crhy.2006.03.002/
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