NDLI: Sensitivity of the Distorted Born Iterative Method to the Initial Guess in Microwave Breast Imaging

Content Provider	IEEE Xplore Digital Library
Author	Fuqiang Gao Van Veen, B.D. Hagness, S.C.
Copyright Year	1963
Abstract	The distorted Born iterative method (DBIM) has been explored recently for microwave breast imaging. DBIM is an iterative method; thus, it requires an initial guess of the dielectric properties of the breast. In this paper, we study the sensitivity of DBIM imaging accuracy and convergence speed to the properties of a homogeneous initial guess. We conduct this investigation for a multifrequency formulation of DBIM, wherein the dispersive breast tissue properties are described with a Debye model. The parameters of the Debye model for the initial guess are linearly linked to reflect typical breast tissue dielectric properties. The static permittivity characterizing the properties is swept over an appropriate range of initial guesses and DBIM is used to obtain imaging results for each guess. Image quality and the number of iterations required for convergence is evaluated using three-dimensional (3-D) anatomically realistic numerical breast phantoms. This investigation not only vividly illustrates the sensitivity of DBIM to the initial guess but also definitively demonstrates that the use of initial values close to the average properties of the breast yields near-optimal performance. Finally, we present and evaluate a practical algorithm for estimating the average properties to be used as the initial guess.
Sponsorship	IEEE Antennas and Propagation Society
Starting Page	3540
Ending Page	3547
Page Count	8
File Size	1436332
File Format	PDF
ISSN	0018926X
Volume Number	63
Issue Number	8
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Breast Phantoms Dielectrics Image reconstruction Antenna measurements Arrays initial guess Distorted Born iterative method microwave inverse scattering microwave breast imaging dielectric properties Dielectric properties distorted Born iterative method (DBIM)
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Electrical and Electronic Engineering

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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