نتایج جستجو برای: microwave imaging

تعداد نتایج: 505129  

2014
A. Shahzad M. O ’ Halloran E. Jones

Microwave tomography has been proven to successfully reconstruct the dielectric profile of a human breast when used in breast imaging applications, thereby providing an alternative to other imaging modalities. However, the method suffers from high computational requirements which restrict its use in practical imaging systems. This paper presents a novel parallelization strategy to accelerate mi...

2013
Guoping Chen Xin Wang Qinghuo Liu

Time reversal imaging method based on full wave numerical technique for likely breast tumors biological tissue in the Microwave-Induced Thermo-Acoustic Tomography (MITAT) system is discussed. In this paper, the mechanism of microwave-induced thermo-acoustic is strictly described based on thermodynamics and thermo-diffusion principles; the equivalent relationship between the absorbed microwave e...

2015
Abdulbaset M. ALI Omar M. RAMAHI

Microwave testing has the advantage of detecting surface and sub-surface flaws and anomalies under coatings, paint or dirt. Thus, major application of microwave sensors is imaging to determine the shape, size, and location of buried flaws using scattered field measurements. A typical microwave system consists of transmitting and receiving antennas and requires that both sides of the material un...

2014
Nikola Petrović

Microwave imaging techniques have shown excellent capabilities in various fields such as civil engineering, nondestructive testing, industrial applications, and have in recent decades experienced strong growth as a research topic in biomedical diagnostics. Many research groups throughout the world work on prototype systems for producing images of human tissues in different biomedical applicatio...

2014
Fang Jian

In this paper, we compare the performance of multilook application for sparse microwave imaging with two different linear models. One is based on the inverse of conventional multilook procedures with frequency-domain multilook observation (FMO) and the other employs the decomposition of synthetic aperture to yield a time-domain multilook observation (TMO). From the comparisosn, we found that FM...

Journal: :Physics in medicine and biology 2009
Alireza Mashal John H Booske Susan C Hagness

Microwave-induced thermoacoustic tomography (MI-TAT) is an imaging technique that exploits dielectric contrast at microwave frequencies while creating images with ultrasound resolution. We propose the use of microbubbles as a dielectric contrast agent for enhancing the sensitivity of MI-TAT for breast cancer detection. As an initial investigation of this concept, we experimentally studied the e...

2015
Tony George Zachariah C. Alex

Microwave-induced thermal acoustic imaging (MITAI) is a promising early breast cancer detection technique, in which image construction is based on thermo acoustics signals generated by the illumination of microwave pulses in tissue. In this work we have performed a microwave induced thermal acoustic signal generation simulation study using Comsol Multiphysics. A biological tissue model irradiat...

Journal: :The Journal of Korean Institute of Electromagnetic Engineering and Science 2009

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