The Prototype of Microwave-Induced Thermo-Acoustic Tomography Imaging by Time Reversal Mirror

Chen, G. P.; Yu, Wei; Zhao, Zhiqin; Nie, Zaiping; Liu, Qing

doi:10.1163/156939308786390021

Cited by 30 publications

(26 citation statements)

References 19 publications

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“…For the sake of saving space, more detailed knowledge about TRM is not mentioned here, the interested reader may consult the references [33][34][35][36][37][38][39][40][41]. [34,35] give the mathematical analysis in one-dimensional or layered media and [33] for three dimensional acoustic waves in random media.…”

Section: Time Reversal Mirror (Trm) Techniquementioning

confidence: 99%

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Evaluation of TRM in the Complex Through Wall Environment

Zheng¹,

Zhao

Nie³

et al. 2009

PIER

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Abstract-Practical interests arising from behind-the-wall target detection, surveillance and reconnaissance et al. claim for high capability of imaging in complicated environments. Time Reversal Mirror (TRM) technique, making use of the principle of reciprocity, emerges as a promising way to deal with such complex problem. In this paper, we investigate TRM in the ultra-wideband (UWB) through wall radar imaging (TWRI) through numerical simulation. The probing region is a square room, with walls of rough surface and random media parameters. TRM is used to image the target settled in the room. We evaluate the degradation of the images when the aperture of the array is decreased or the received signals are contaminated by noises. The back projection (BP) algorithm is employed here as a comparison for imaging quality. For the case in which the random walls are changed between the forward and inverse phase of time reversal, we check the imaging stability and applied an averaged Green's function to improve the imaging quality. Finally, some interesting conclusions are drawn.

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Section: Time Reversal Mirror (Trm) Techniquementioning

confidence: 99%

“…[36,37] show the self-averaging and statistical stability properties of time reversal. [38][39][40][41] report some new achievements of TRM in applications (such as application in the Microwave-Induced Thermo-Acoustic Tomography (MI-TAT) for early breast cancer detection).…”

Section: Time Reversal Mirror (Trm) Techniquementioning

confidence: 99%

Evaluation of TRM in the Complex Through Wall Environment

Zheng¹,

Zhao

Nie³

et al. 2009

PIER

View full text Add to dashboard Cite

show abstract

“…TRM technique is widely regarded as a powerful method to image and detect targets in the complex environments. For the sake of saving space, more detailed knowledge about TRM is not mentioned here, the interested reader may consult the References [18,[34][35][36][37][38][39][40][41][42]. [18] presented the physical experiments, [35,36] gave the mathematical analyzes in one-dimensional and layered media and [34] for three dimensional acoustic and electromagnetic waves in random media.…”

Section: Time Reversal Mirror (Trm) Techniquementioning

confidence: 99%

“…[37,38] show the self-averaging and statistical stability properties of time reversal. [39][40][41][42] reported some new applications of TRM (such as application in the Microwave-Induced Thermo-Acoustic Tomography (MI-TAT) for early breast cancer detection).…”

Section: Time Reversal Mirror (Trm) Techniquementioning

confidence: 99%

Application of TRM in the Uwb Through Wall Radar

Zheng¹,

Zhao²,

Nie³

2008

PIER

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Abstract-Time Reversal Mirror (TRM) technique, in the virtue of its high resolution in the heterogeneous media, has been widely applied in the area of acoustics and electromagnetics. In this paper, the technique is developed to imaging targets in the contest of ultra-wideband (UWB) through wall radar (TWR) through numerical simulation. We firstly consider the technique to image targets behind a single-layered wall and then extend to the multi-layered wall. The simulation results have reported the imaging capability of the algorithm and its powerful use for TWR imaging. For concerning the image stability, we investigate the TRM images for the case in which there is a mismatch between the walls associated with the forward and inverse phases of time reversal. The back projection imaging algorithm is compared here at the same time for a contrast of the imaging quality. Finally, some conclusions are drawn.

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“…Time Reversal Mirror (TRM) technique is applied as an inversion method to reconstruct the image. TRM is a combination technique based on wave propagation and array signal processing [15][16][17][18]. It has the ability to effectively suppress system noise because of its characteristics of spatial-temporal matched filtering compared with other methods.…”

Section: Introductionmentioning

confidence: 99%

System Development of Microwave Induced Thermo-Acoustic Tomography and Experiments on Breast Tumor

Zhao¹,

Song²,

Zhu³

et al. 2013

PIER

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Abstract-Microwave induced thermo-acoustic tomography (MI-TAT) has become a keen research topic in recent years due to its great potential in early breast cancer detection. A secure and accurate MI-TAT system has been established. Some experiments have been made to demonstrate the performance of the MITAT system. Based on an experiment using phantom, some quantitative features of the system have been obtained. Some imaging experiments with real human breast cancer tissues are performed to demonstrate its effectiveness and the potential in clinical diagnosis. Images with both high contrast and fine spatial resolution are achieved by using time reversal mirror (TRM) technique in the imaging processing. Moreover, comparisons between the MITAT system result and an ultrasound imaging system result are made. From the comparison, the MITAT system shows its advantages of better contrast over the ultrasound imaging system. The system and the experiments in this paper verify the mechanism of MITAT for breast cancer detection and provide a prototype basis for clinical practice.

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The Prototype of Microwave-Induced Thermo-Acoustic Tomography Imaging by Time Reversal Mirror

Cited by 30 publications

References 19 publications

Evaluation of TRM in the Complex Through Wall Environment

Evaluation of TRM in the Complex Through Wall Environment

Application of TRM in the Uwb Through Wall Radar

System Development of Microwave Induced Thermo-Acoustic Tomography and Experiments on Breast Tumor

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