Title :
Microwave breast imaging based on an optimized two-step iterative shrinkage/thresholding method
Author :
Zhenzhuang Miao ; Kosmas, Panagiotis
Author_Institution :
Dept. of Inf., King´s Coll. London, London, UK
Abstract :
We propose the application of a two-step iterative shrinkage/thresholding method (TwIST) to improve the resolution in microwave imaging applications. The TwIST algorithm is combined with the distorted Born iterative method (DBIM) to reconstruct the complex permittivity of two-dimensional (2-D) anatomically realistic numerical breast phantoms. The paper discusses how to optimize the algorithm parameters in order to improve the quality of reconstructions and the robustness of the algorithm. Our results demonstrate the ability of this method to produce images with enhanced resolution in two-dimensional (2-D) microwave breast imaging.
Keywords :
biological organs; image reconstruction; image resolution; iterative methods; medical image processing; microwave imaging; permittivity; 2D anatomically realistic numerical breast phantoms; 2D microwave breast imaging; TwIST algorithm; distorted Born iterative method; enhanced resolution; optimized two-step iterative shrinkage-thresholding method; permittivity; robustness algorithm; two-dimensional anatomically realistic numerical breast phantoms; two-dimensional microwave breast imaging; Breast; Image reconstruction; Inverse problems; Iterative methods; Microwave imaging; Microwave theory and techniques; Breast imaging; Frequency hopping; Inverse scattering; Iterative methods; Microwave tomography; TwIST method;
Conference_Titel :
Antennas and Propagation (EuCAP), 2015 9th European Conference on
Conference_Location :
Lisbon
