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Qing.H. Liu

Work place: Department of Electrical and Computer Engineering ,Duke University, Durham, NC 27708, USA

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Research Interests: Earth & Environmental Sciences

Biography

Qinghuo Liu (S'88{M'89{SM'94) received the B.S. and M.S. degrees in physics from Xiamen University, China, in 1983 and 1986, respectively,and the Ph.D. degree in electrical engineering from the University of Illinois at Urbana-Champaign in 1989.
From September 1986 to December 1988, Dr. Liu was a research assistant in the Electromagnetics Laboratory at the University of Illinois at Urbana-Champaign.  From January 1989 to February 1990 he was a postdoctoral research associate at the same laboratory.From 1990 to 1995 he was a research scientist and program leader with Schlumberger-Doll Research, Ridgefield, CT. Since October 1995 he has been an associate professor at the Klipsch School of Electrical and Computer Engineering, New Mexico State University,Las Cruces, New Mexico.
Dr. Liu is a member of Phi Kappa Phi, Tau Beta Pi, SEG, a full member of U.S. National Committee of URSI Commisions B and F, and a Senior Member of IEEE. Currently he serves as an Associate Editor for IEEE Transactions on Geoscience and Remote Sensing. He received a Presidential Early Career Award for Scientists and Engineers (PECASE) from the National Science and Technology Council (NSTC) and an Early Career Research Award from the Environmental Protection Agency in 1996, and a CAREER Award from the National Science Foundation in 1997.

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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