in ultra-wideband (uwb) multistatic microwave breast cancer imaging, the long imaging time is an important issue. in this paper, a novel imaging method for multistatic uwb radarbased microwave breast cancer imaging using sparse sampling has been proposed that significantly reduces the amount of data and imaging time. in this method, instead of measuring multistatic radar signals conventionally,...

Polarimetric Synthetic Aperture Radar (Pol.-SAR) allows us to implement the recognition and classification of radar targets. This article investigates the arrangement of scatterers by SAR data and proposes a new Look-up Table of Region (LTR). This look-up table is based on the combination of (entropy H/Anisotropy A) and (Anisotropy A/scattering mechanism α), which has not been reported up now. ...

A coarray-based aperture synthesis scheme using subarrays and post-data acquisition beamforming is presented for through-the-wall wideband microwave imaging applications. Various effects of the presence of the wall, such as refraction, change in speed, and attenuation, are incorporated into the beamformer design. Simulation results verifying the proposed synthetic aperture technique for a TWI s...

An inverse scattering problem (ISP) for synthetic aperture radar (SAR) data in application to through-the-wall imaging is addressed. In contrast with the conventional algorithms of SAR imaging, which work linearized mathematical model based on Born approximation, fully nonlinear case considered here. To avoid local minima problem, so-called “convexification” globally convergent inversion scheme...

ARTICLE INFO ABSTRACT ARTICLE HISTORY: Received 27 October 2013 Revised 28 November2013 Accepted 4 December 2013 Recently, time reversal (TR) method, due to its high functionality in heterogeneous media has been widely employed in microwave imaging (MI) applications. One of the applications turning into a great interest is through-wall microwave imaging (TWMI). In this paper, TR method is appli...

PURPOSE To develop a novel endovascular heating source using a magnetic resonance (MR) imaging guidewire (MRIG) to deliver controlled microwave energy into the target vessel for thermal enhancement of vascular gene transfection. MATERIALS AND METHODS A 0.032-inch MRIG was connected to a 2.45-GHz microwave generator. We 1) calculated the microwave power loss along the MRIG, 2) simulated the po...

polarimetric synthetic aperture radar (pol.-sar) allows us to implement the recognition and classification of radar targets. this article investigates the arrangement of scatterers by sar data and proposes a new look-up table of region (ltr). this look-up table is based on the combination of (entropy h/anisotropy a) and (anisotropy a/scattering mechanism α), which has not been reported up now. ...

Focused Microwave Radiometry, aiming at measuring tissue temperature and conductivity distributions inside the human body, is the technique implemented in the development of a prototype non-invasive microwave imaging system operating at 3.5GHz, for feasible brain intracranial applications. The novelty of the proposed methodology consists in the use of an ellipsoidal conductive wall cavity that ...

" If we save even one life, we have been cost effective. " Dr. Rochelle Dicker Acknowledgement I give a sincere gratitude to all the people who made it possible for me to write this thesis, especially to my family. I also want to thank to the doc. Ing. Miloš Drutarovsk´y, CSc. for my supervising, to the Dr. Jürgen Sachs and Dr. Rudolf Zetik for their technical and theoretical suggestions and re...