Microwave thermometry with potential application in non-invasive monitoring of hyperthermia
Artikel i vetenskaplig tidskrift, 2020

Integration of an adaptive finite element method (AFEM) with a conventional least squares method has been presented. As a 3D full-wave forward solver, CST Microwave Studio has been used to model and extract both electric field distribution in the region of interest (ROI) and S-parameters of a circular array consisting of 16 monopole antennas. The data has then been fed into a differential inversion scheme to get a qualitative indicator of how the temperature distribution evolves over a course of the cooling process of a heated object. Different regularization techniques within the Tikhonov framework are also discussed, and a balancing principle for optimal choice of the regularization parameter was used to improve the image reconstruction quality of every 2D slice of the final image. Targets are successfully imaged via proposed numerical methods.

inverse scattering

microwave imaging

Thermal therapy

adaptive finite element method

hyperthermia

Författare

Morteza Ghaderi Aram

Chalmers, Elektroteknik, Signalbehandling och medicinsk teknik, Biomedicinsk elektromagnetik

Larisa Beilina

Chalmers, Matematiska vetenskaper, Tillämpad matematik och statistik

Hana Dobsicek Trefna

Chalmers, Elektroteknik, Signalbehandling och medicinsk teknik, Biomedicinsk elektromagnetik

Journal of Inverse and Ill-Posed Problems

0928-0219 (ISSN) 1569-3945 (eISSN)

Vol. 28 5

Ämneskategorier

Beräkningsmatematik

DOI

10.1515/jiip-2020-0102

Mer information

Senast uppdaterat

2020-11-10