Single-Step Approach to Phaseless Contrast-Source Inverse Scattering

Phaseless Single-Step Microwave Imaging Technique for Biomedical Applications

“…Furthermore, MWT is revealed to be less prone to false-positive and false-negative rates, as compared to conventional diagnostics techniques [1]. According to a first preliminary investigation presented in [2], a Phaseless Contrast Source Inversion Method (P-CSI) is successfully implemented in the present work for breast tissue reconstruction. In particular, a Contrast Source (CS) formulation is adopted [3], [4], and the inverse scattering problem is solved with no linearization procedure, by converting it into an iterative optimization problem, where the two unknowns, namely the contrast source and the dielectric contrast, are alternatively updated according to a conjugate gradient scheme.…”

Phaseless Microwave Tomography Assessment for Breast Imaging: Preliminary Results

“…Furthermore, the use of nonionizing radiation in MWT techniques represents one of the main advantages as compared to computed tomography (CT) and positron emission tomography (PET). In this work, according to the preliminary assessment presented in [1], a Phaseless Contrast Source Inversion (P-CSI) method is successfully implemented for breast tissue reconstruction. Specifically, starting from the contrast source (CS) formulation described in [2,3], the inverse scattering problem is solved with no linearization procedure, but recasting it into an iterative optimization problem, where the two problems unknowns, namely, the contrast source and the dielectric contrast, are alternatively updated according to a conjugate gradient scheme.…”