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High contrast microwave tomography using topology optimization techniques
Uppsala University,Department of Information Technology, Division of Scientific Computing. (UMIT)
Umeå universitet, Teknisk-naturvetenskapliga fakulteten, Institutionen för datavetenskap. (Design Optimization, UMIT)
2010 (engelsk)Inngår i: Journal of Computational and Applied Mathematics, ISSN 0377-0427, E-ISSN 1879-1778, Vol. 234, nr 6, s. 1773-1780Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Microwave tomography for medical applications leads to a difficult reconstruction problem for the dielectric properties of biological tissue due to strongly diffracting waves in combination with large dielectric contrasts. We apply the material distribution technique used for topology optimization of elastic structures in order to solve the nonlinear least-squares problem underlying the reconstruction problem. Using simulated numerical data with an approximate signal-to-noise ratio of 40 dB and geometrical a priori information on the unknown objects, we obtain good estimates of the dielectric properties corresponding to biological objects.

sted, utgiver, år, opplag, sider
2010. Vol. 234, nr 6, s. 1773-1780
Emneord [en]
medical microwave tomography, topology optimization, inverse problem, Helmholtz equation, Maxwell equations
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Identifikatorer
URN: urn:nbn:se:umu:diva-40289DOI: 10.1016/j.cam.2009.08.027ISI: 000278570900021OAI: oai:DiVA.org:umu-40289DiVA, id: diva2:399154
Tilgjengelig fra: 2011-02-21 Laget: 2011-02-21 Sist oppdatert: 2018-06-08bibliografisk kontrollert

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