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

Full Text (PDF, 388KB), PP.29-35

Views: 0 Downloads: 0


Guoping Chen 1,2,* Zhiqin Zhao 2 Qing.H. Liu 3

1. School of Communication and Information Engineering, Chongqing 400065, China

2. School of Electronic Engineering, Chengdu 610054, China

3. Department of Electrical and Computer Engineering ,Duke University, Durham, NC 27708, USA

* Corresponding author.


Received: 21 Aug. 2010 / Revised: 6 Dec. 2010 / Accepted: 17 Jan. 2011 / Published: 8 Jun. 2011

Index Terms

Microwave-Induced Thermo-Acoustic Tomo- graphy, Pseudo-Spectrum Time Domain, Time Reversal Mirror


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.

Cite This Paper

Guoping Chen, Zhiqin Zhao, Qing.H. Liu, "Pseudo-Spectrum Time Domain and Time Reversal Mirror technique using in Microwave-induced Thermo-Acoustic Tomography System", International Journal of Information Technology and Computer Science(IJITCS), vol.3, no.3, pp.29-35, 2011. DOI:10.5815/ijitcs.2011.03.05


[1]A. Kruger, W. L. Kiser, D.R. Reinecke, G.A. Kruger, R.L. Eisenhart, Thermoacoustic Computed Tomography of the Breast at 434 MHz, IEEE MIT-S Digest, vol. 2, pp. 591 – 595, 1999.

[2]M. Xu, L. V. Wang, RF-induced Thermo-acoutic Tomography, Proceedings of the Second Joint EMBS/BMES Conference, pp. 1211 – 1212, 2002.

[3]W. T. Joines, Y. Zhang, C. Li, R. L. Jirtle, The measured electrical properties of normal and malignant human tissues from 50 to 900 MHz, Am.Assoc. Phys. Med., vol. 21, pp. 547-551, 1994.

[4]K. H. Lim, J. H. Lee, Q. H. Liu, Thermoacoustic tomography forward modeling with the spectral element method, Medical Physics, 2008, 35(1): 4-12.

[5]M. Fink, Time Reversal of Ultrasonic Fields. I. Basic principles, IEEE Transaction on Ultrasonics, Ferroelectrics, and Frequency Control, vol. 39, no.5, 555 – 567, 1992.

[6]A.C.Tam,’’Application of photoacoustic sensing techniques,’’ Rev.Mod.Phys.,vol.58,pp.381-431,1986

[7]CHEN GuoPing, ZHAO ZhiQin, GONG Wei, NIE ZaiPing and LIU Qing-Huo, The Development of the Microwave-Induced Thermo-acoustic Tomography Prototype System, Chinese Science Bulletin, 2009, 52(12):1786-1789.

[8]L.V.Wang,Photoacoustic Imaging and Spectroscopy (CRC,Boca Raton,2009)

[9]J. P. Fouque, G. Papanicolaou, Wave Propagation and Time Reversal in Randomly Layered Media, Springer Press, 2007.

[10]Q. H. Liu, The PSTD algorithm: A time-domain method combining the pseudospectral technique and perfectly matched layers, J. Acous. Soc. Am., vol. 101, no. 5, Pt. 2, p. 3182, May 1997 (13rd Acoustical Society of America Meeting).

[11]G. Wojcik, Fomberg, B. Waag, R. Carcione, L. Mould, J. Nikodym, L. Driscoll, T. , Pseudo-spectral Methods for Large-Scale Bioacoustic Models, IEEE Ultrasonics Symposium, vol.2, pp. 1501- 1507, Oct. 1997.

[12]T. D. Mast, Empirical relationships between acoustic parameters in human soft tissues, Acoustics Research Letters Online, vol. 37, no. 1, pp. 37-43, 2000.

[13]Minghua Xu, Lihong V.Wang, Time-Domain Reconstruc- tion for Thermoacoustic Tomography in a Spherial Geometry, IEEE Transaction on Medical Imaging, VOL.21,No.7,July 2002

[14]Minghua Xu, Yuan Xu, and Lihong V.Wang, Time-Domain Reconstruction Algorithms and Numerical Simulations for Thermoacoustic Tomography in Various Geometries,IEEE Transactions on Biomedical Engineering,VOL.50,No.9,Sep 2003