Medical microwave imaging techniques seek to exploit dielectric-properties contrast mechanisms that are sensitive to physiological or pathological factors of clinical interest. The dawn of the 21st century has brought exciting prospects for innovative microwave sensing technologies to address diagnostic needs in medicine, particularly early-stage breast cancer detection. Yet numerous challenges...

The theory of Compressive Sensing (CS) enables the reconstruction of sparse signals as well as image from small set of random measurements by solving primal dual interior point method for l1 minimization problem. This paper presents reconstruction of signal based on CS theory applied on experimental data. Reconstruction of Ascan and B-scan image with fewer samples is obtained without affecting ...

The paper discusses fabrication of homogenous and heterogeneous breast phantoms to simulate the dielectric properties of human breast over the microwave frequency range from 0.5GHz to 13.5GHz. The breast phantoms have stable mechanical configuration and dielectric properties suitable for microwave imaging experiments particularly ultra-wideband microwave imaging for breast cancer detection.

An electromagnetic model is simulated using finite difference time domain for through-the-wall radar imaging. In the numerical simulation narrow-, wide-, and ultra-wide-band signals are used as emission sources. The back projection algorithm is applied to image square and rectangular ideal metal bodies based on a refraction model. The results demonstrate that there is obvious refraction in the ...

Through-the-Wall Radar imaging (TWRI) is emerging as a viable technology for providing high quality imagery of enclosed structures. TWRI makes use of electromagnetic waves to penetrate through building wall materials. Due to the " see " through ability, TWRI has attracted much attention in the last decade and has found a variety of important civilian and military applications. Signal processing...

We are developing a microwave system for noninvasively monitoring temperature distributions in human tissue during thermal therapy. Central to our approach is a microwave antenna array and switching matrix which allows tomographic data collection over a wide range of frequencies (300 MHz 1 GHz). The measured field values are processed by a reconstruction algorithm that creates electrical proper...

Ultra-Wideband (UWB) is the promising technology for localization of the objects behind the walls. Recent terrorist activities and law-enforcement situations underscore the need for effective through-wall detection. UWB radar signals has extremely large frequency spectrum and since low frequencies has more penetration capabilities through dielectric materials it is best suitable for Through-the...