Comparison of Radar and Thermoacoustic Technique in Microwave Breast Imaging

Abstract

Abstract-Microwave radar and microwave-induced thermoacoustic technique exploit the contrast in the permittivity and conductivity between malignant and healthy tissue.They have emerged as promising techniques for detecting breast cancers. This paper compares the imaging capability of these techniques in the presence of homogeneous and heterogeneous breast tissue. Relying on the data from the finite-difference time-domain simulations, the study shows that both techniques are capable of imaging homogeneous objects. In the presence of electromagnetic dispersion and heterogeneity, radar signals suffer from strong dispersion and multiple scattering, which decorrelate the signals with the scatterers. The microwaveinduced thermoacoustic technique takes the advantage of breast being acoustically homogeneous and is capable of generating high-quality images.

Computationally Efficient Model for Uwb Signal Attenuation Due to Propagation in Tissue for Biomedical Implants

“…The transmission matrix for the ith segment of Figure 1(b) can now be written directly from (12) and (13).…”

“…To date many transmission models in the BAN UWB band have focused on wearable devices [8][9][10] as well as beamformers [11] and imagers [12], with only a few models targeting implant channels [3,13,14].…”

Microwave Head Imaging for Stroke Detection

“…Confocal algorithms are used extensively in ultra-wideband breast imaging, notable examples include [15][16][17]. The confocal algorithm works by making a hypothesis that an echo signal originates from a given point; the normalized difference signals of each antenna are added at this space location.…”

Structure Analysis of Single- And 2 Multi-Frequency Subspace Migrations in 3 Inverse Scattering Problems

“…In research fields such as physics, medical science, and materials engineering, this is an interesting and important problem. Related works can be found in [2,7,[9][10][11]32] and references therein. In order to solve this problem, various algorithms for finding the locations and/or shapes of targets have been accordingly developed.…”