Numerical algorithm for dielectric-permittivity microwave imaging of inhomogeneous biological bodies

1 November 1991

journal article
research article
Published by Springer Nature in Medical & Biological Engineering & Computing

Vol. 29 (6) , NS37-NS44
https://doi.org/10.1007/bf02446100

Abstract

A two-dimensional microwave system is developed to explore the possibility of imaging the distribution of dielectric permittivity in an inhomogeneous biological body. A multiview approach is presented, which can notably improve the system's performance; it makes use of an illumination source that rotates jointly with the observation domain in which the scattered electric field is to be measured. The equation for inverse electromagnetic scattering is transformed into matrix form through the application of the moment method. A pseudoinversion algorithm is used to determine the distribution of the dielectric properties of the scattering body. A look-up table is devised to quickly form the final image. The results of some numerical simulations are reported to point out the capabilities and limitations of the method.

Keywords

This publication has 12 references indexed in Scilit:

Microwave imaging by three‐dimensional Born linearization of electromagnetic scattering
Radio Science, 1990
Two-dimensional microwave imaging by a numerical inverse scattering solution
IEEE Transactions on Microwave Theory and Techniques, 1990
Nonlinear extension to a moment method iterative reconstruction algorithm for microwave tomography
Proceedings of the IEEE, 1986
Active microwave imaging of inhomogeneous bodies
IEEE Transactions on Antennas and Propagation, 1985
A Solution of Electromagnetic Imaging Using Pseudoinverse Transformation
IEEE Transactions on Medical Imaging, 1984
Limitations of Imaging with First-Order Diffraction Tomography
IEEE Transactions on Microwave Theory and Techniques, 1984
A Computer Simulation Study of Diffraction Tomography
IEEE Transactions on Biomedical Engineering, 1983
On the Possible Use of Microwave-Active Imaging for Remote Thermal Sensing
IEEE Transactions on Microwave Theory and Techniques, 1983
Electromagnetic Fields Induced Inside Arbitrarily Shaped Biological Bodies
IEEE Transactions on Microwave Theory and Techniques, 1974
Scattering by a dielectric cylinder of arbitrary cross section shape
IEEE Transactions on Antennas and Propagation, 1965