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Vol. 159, Issue 11, November 2013, pp. 464-469

 

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Research on an Approach to Ultrasound Diffraction Tomography Based on Wave Theory
 
1 Hao-Quan WANG, 2 Le-Nan CAO, 3 Hui-Zhen CHAI

1 Key Laboratory of Instrument Science & Dynamic Measurement of the Ministry Education, National Key Laboratory of Science and Technology on Electronic Test and Measurement, North University of China, Taiyuan, 030051, China

2 Henan Polytechnic Institute, Nanyan, 473009, China

3 School of Information and Communication Engineering, North University of China, Taiyuan, 030051, China

1 Tel.: +86-531-3557444

1 E-mail: wanghaoquan12@163.com

 

Received: 28 August 2013   /Accepted: 25 October 2013   /Published: 30 November 2013

Digital Sensors and Sensor Sysstems

 

Abstract: According to the ultrasonic propagation characteristics in continuous mediums, the propagation problem of sound waves in inhomogeneous mediums was studied. Based on the scattering field wave equation and total field wave equation, the method of moments was introduced into the discrete problem of equations which provided a theoretical basis for solving wave equations. The Born iterative algorithm was adopted to solve the nonlinear problem of equations. The truncated singular value decomposition regularization method was adopted to solve the stability of solutions. Experimental results indicate that the above methods can be applied to the strong scattering field and have higher image quality.

 

Keywords: Wave equation, iterative algorithm, Truncated singular value decomposition, Ultrasound computed tomography.

 

 

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