Schlüsselwörter
(Englisch)
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computational bio-electromagnetics; integral equation methods; hyper-singular integrals; wireless power transmission; microwave imaging; dosimetry
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Forschungsprogramme
(Englisch)
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COST-Action IC1301 - Wireless Power Transmission for Sustainable Electronics
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Kurzbeschreibung
(Englisch)
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The research proposed in this application will serve the two COST Actions IC1301 on Wireless Power Transmission (WPT) and TD1301 on Medical Microwave Imaging. The common point for both actions is the interaction of electromagnetic (em) fields with the human body. In the former, it is a problem of dosimetry, thus the magnetic field strength should be minimized to avoid adverse health effects and the devices optimized for proper functioning. In the latter, the em field is used for medical examination, like e.g. stroke detection, breast cancer of vital signs monitoring. Accurate modelling and simulation of the interaction of em fields with the human body is thus of uttermost interest. This proposal, in accordance with the two Action plans, aims to contribute in this direction by developing analytical and numerical techniques for high precision algorithms for strongly inhomogeneous, dispersive and lossy media (human body). For this, we propose to apply volume integral equation methods, which is one of the most promising technique for high-precision simulations and very versatile. The outcome of this research will help in a better understanding of the effect that em fields have on the human body. This, in turn, will help to answer safety issues of WPT and other systems. But it will obviously also result in improved medical technologies, devices and therapies like ultra-high field MRI, implanted health sensors or deep brain stimulation for dementia to name only but a few.
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Weitere Hinweise und Angaben
(Englisch)
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Full name of research-institution/enterprise: EPF Lausanne STI IEL LEMA Laboratoire d'électromagnétisme et acoustique ELB 017
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Partner und Internationale Organisationen
(Englisch)
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AT; BE; CY;: CZ; DK; FI; FR; MK; DE; EL; IE; IL; IT; MT; NL; NO; PL; PT; RO; RS; SK; ES; SE; TR; UK; US
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Abstract
(Englisch)
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The current project aims àt developing computational tools forfonward and inverse electromagnetic scattering Problems. In récent years, the process of modelling the interactions of electromagnetic fields with their environment by using computationally efficient approximations to Maxwell's équations attracted growing interest in the biomédical engineering community. A better understanding of the interaction of electromagnetic fields with the human brain respectively body will resuit in improved médical devices, technologies and thérapies. From an economical viewpoint, improved thérapies can significantly reduce the costs for our heaith System because they can offer a more indépendant life to people. The modelling of the field réponse of a human body to an electromagnetic excitation is challenging due to its strongly inhomogeneous dielectric properties and high contrast. Volume Integral Equations (VIE) are a versatile technique to model inhomogeneous scattering objects for which numerical tests show excellent convergence properties even for high dielectric contrasts. On the one hand, the évolution in computer science (fester processors, larger memory, parailelization in multi-thread and multi-processor Systems, Graphie Processor Units -GPUs) boosts the computational complexity that can be handied by modem machines. On the other hand, innovations in bio-engineering demand for an even more detailed, larger and especially more accurate représentation of the EM environment of thèse Systems. For Microwave Imaging thèse two facts open up a large variety of new possibilities for new inverse scattering algorithms to predict or detect specific features in biomédical tissues. The proposed work is focusing on the efficient and accurate modelling of direct and inverse electromagnetic scattering problems for strongly inhomogeneous and dispersive media. This research is perfomed in the framework of Microwave Imaging (MWI) for brain stroke détection and monitoring to distinguish haemorrtiagic from ischémie stroke. Nevertheiss, other technologies may profit from this research as well, such as the emerging ultra-high field MPI, wrtiich is potentially dangerous to patients with implants and for wrtiieh enhanced electromagnetic forward solvers can help in its development and assessment.
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Datenbankreferenzen
(Englisch)
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Swiss Database: COST-DB of the State Secretariat for Education and Research Hallwylstrasse 4 CH-3003 Berne, Switzerland Tel. +41 31 322 74 82 Swiss Project-Number: C14.0071
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