Zhiqin Zhao

Work place: School of Electronic Engineering, Chengdu 610054, China

E-mail: zqzhao@uestc.edu.cn


Research Interests: Computational Engineering, Engineering


Zhiqin Zhao (SM’05) received the B.S. and M.S. degrees in electronic engineering from the University of Electronic Science and Technology of China (UESTC), Sichuan, China, and the Ph.D. degree in electrical engineering from Oklahoma State University, Stillwater, in 1990, 1993, and 2002, respectively.
From 1996 to 1999, he was with the Department of Electronic Engineering, UESTC. From 2000 to 2002, he researched rough surface scattering as a Research Assistant with the School of Electrical and Computer Engineering, Oklahoma State University. From 2003, he was a Research Associate with the Department of Electrical and Computer Engineering, Duke University, Durham, NC. In 2006, he became a Full Professor with the School of Electronic Engineering, UESTC. His current research interests include computational electromagnetics and signal processing. Dr. Zhao is a member of Phi Kappa Phi honor society and a senior member of IEEE. 

Author Articles
Pseudo-Spectrum Time Domain and Time Reversal Mirror technique using in Microwave-induced Thermo-Acoustic Tomography System

By Guoping Chen Zhiqin Zhao Qing.H. Liu

DOI: https://doi.org/10.5815/ijitcs.2011.03.05, Pub. Date: 8 Jun. 2011

Microwave-Induced Thermo-Acoustic Tomograp- phy (MITAT) has attracted more concerns in recent years in biomedical imaging field. It has both the high contrast of the microwave imaging and the high resolution of ultrasound imaging. As compared to optoacoustics, which uses instead a pulsed light for evoking optoacoustic response, thermo-aco- ustic imaging has the advantage of deeper tissue penetration, attaining the potential for wider clinical dissemination, especially for malignant tumors. In this paper, the induced thermo-acoustic wave propagating in a mimic biologic tissue is simulated by numeric method Pseudo-Spectrum Time Domain (PSTD). Due to the excellent performance in noise- depress and the stability for the fluctuation of the model parameters, Time Reversal Mirror (TRM) imaging technique is studied computationally for the simulative received therm- o-acoustic signals. Some thermo-acoustic objects with differ- ent initial pressure distribution are designed and imaged by TRM technique to represent the complex biologic tissue case in a random media. The quality of images generated by TRM technique based on PSTD method hints the potential of the MITAT technique.

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