Application of two-dimensional discrete dipole approximation in simulating electric field of a microwave breast imaging system
Journal article, 2019

© 2016 IEEE. The 2-D electric field distribution of the microwave imaging system is numerically simulated for a simplified breast tumour model. The proposed two-dimensional discrete dipole approximation (DDA) has the potential to improve computational speed compared to other numerical methods while retaining comparable accuracy. We have modeled the field distributions in COMSOL Multiphysics as baseline results to benchmark the DDA simulations. We have also investigated the adequate sampling size and the effect of inclusion size and property contrast on solution accuracy. In this way, we can utilize the 2-D DDA as an alternative, fast, and reliable forward solver for microwave tomography. From a mathematical perspective, the derivation of the 2-D DDA and its application to microwave imaging is new and not previously implemented. The simulation results and the measurements show that the 2-D DDA is a well-grounded forward solver for the specified microwave breast imaging system.

microwave imaging

tomography

forward solvers

discrete dipole approximation

Computational electromagnetics

Author

Samar Hosseinzadegan

Chalmers, Electrical Engineering, Signalbehandling och medicinsk teknik, Biomedical Electromagnetics

Andreas Fhager

Chalmers, Electrical Engineering, Signalbehandling och medicinsk teknik, Biomedical Electromagnetics

Mikael Persson

Chalmers, Electrical Engineering, Signalbehandling och medicinsk teknik

Paul M Meaney

Chalmers, Electrical Engineering, Signalbehandling och medicinsk teknik, Biomedical Electromagnetics

Thayer School of Engineering at Dartmouth

IEEE Journal of Electromagnetics, RF and Microwaves in Medicine and Biology

24697249 (eISSN)

Vol. 3 2 80-87 8542706

Subject Categories

Computational Mathematics

Control Engineering

Other Electrical Engineering, Electronic Engineering, Information Engineering

DOI

10.1109/JERM.2018.2882689

More information

Latest update

7/1/2019 1