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Microwave Tomography: A Numerical Study of Solving Linear Equations in the Non-linear Inverse Scattering Problem

  • Latifah MohamedEmail author
  • Nur Adyani Mohd Affendi
  • Azuwa Ali
  • Nooraihan Abdullah
Conference paper

Abstract

Microwave tomography is an inverse scattering problem which is formalized by determines the position and dielectric properties distribution of the unknown object from the measured scattered field. The quantitative image obtained from microwave tomography approach provides information directly correlated to the internal structure and composition of the examined object, which is necessity in biomedical and geo-surveying applications. Recently, studies on microwave imaging (MWI) for early breast cancer detection have attracted attentions. The breast cancer detection based on microwave tomography relies on large differences in dielectric properties between healthy and malignant tissues. In MWI, the examined object is successively illuminated by transmitting antenna and the resulting electromagnetic field is measured by the receiving antennas. The image reconstruction process in microwave tomography involves forward problem and inverse problem. For the forward problem, Method of Moment (MoM) is used to obtain the measurement data, which are related to the scattered field resulting from the interaction between the known incident field and the scatterers inside the imaging region. The measurement data is then used in the inverse problem, where Distorted Born Iterative Method (DBIM) is proposed to reconstruct the dielectric properties distribution of the object by solving the non-linear inverse scattering problem. The simulation results show that the ill-posedness of the non-linear problem can be reduced and a more stable solution can be performed by choosing the appropriate solving techniques of the system of linear equations.

Keywords

Microwave tomography Inverse scattering Method of moment DBIM Non-linear 

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Copyright information

© Springer Nature Singapore Pte Ltd. 2019

Authors and Affiliations

  • Latifah Mohamed
    • 1
    Email author
  • Nur Adyani Mohd Affendi
    • 1
  • Azuwa Ali
    • 1
  • Nooraihan Abdullah
    • 2
  1. 1.School of Electrical Systems EngineeringUniversiti Malaysia PerlisArauMalaysia
  2. 2.Institut Matematik Kejuruteraan, Universiti Malaysia PerlisArauMalaysia

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