Title :
Iterative algorithm for microwave imaging using the CGM-FFT and the pseudoinverse method
Author :
Mallorqui, J.J. ; Llorens, V.
Author_Institution :
Dept. of Signal Theory & Commun., ETSETB, Barcelona, Spain
Abstract :
Within biomedical microwave tomography, a spatial iterative method for the reconstruction of the complex permittivity of inhomogeneous lossy dielectric objects with arbitrary shape from their scattered electric field is shown. Starting from the integral representation of the electric field and by means of the method of moments (MoM) and a first order linearization of the resulting expressions, the integral equations are converted into matrix equations building an iterative scheme. This technique has been developed for the bidimensional TM case with cylindrical geometry. The advantages and limitations of this algorithm are also discussed.
Keywords :
biomedical imaging; computerised tomography; dielectric losses; electric fields; electromagnetic wave scattering; fast Fourier transforms; image reconstruction; integral equations; inverse problems; iterative methods; linearisation techniques; matrix algebra; medical image processing; method of moments; microwave imaging; permittivity; CGM-FFT; bidimensional TM case; biomedical microwave tomography; complex permittivity; cylindrical geometry; first order linearization; inhomogeneous lossy dielectric objects; integral equations; integral representation; iterative algorithm; matrix equations; method of moments; microwave imaging; pseudoinverse method; reconstruction; scattered electric field; spatial iterative method; Biomedical imaging; Dielectric losses; Image reconstruction; Integral equations; Iterative algorithms; Iterative methods; Microwave imaging; Microwave theory and techniques; Permittivity; Tomography;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1994. AP-S. Digest
Conference_Location :
Seattle, WA, USA
Print_ISBN :
0-7803-2009-3
DOI :
10.1109/APS.1994.408128
