Single-frequency matching pursuits based time-of-flight measurement in viscoacoustic medium

Broadband ultrasound signals will produce distortion in viscoacoustic medium, which may influence the accuracy of time-of-flight (TOF) measurement. Under the condition of single-frequency acoustic source, the wave propagation process in viscoacoustic medium was analyzed and an approximate solution of the wave propagation was given. Instances of broadband ultrasound were analyzed and simulated based on the single-frequency results. A single-frequency matching pursuits (SFMP) algorithm was then introduced to solve the waveform distortion problem. Time-frequency decomposition was applied to extracting the single-frequency compositions from broadband ultrasound signals, and then these compositions were sent to the matching pursuits (MP) algorithm for calculating the TOF parameters. Compared with the broadband signals, the shapes of extracted single-frequency signals change more slightly as distance and attenuation coefficient increase. The residuals of SFMP were far less than those of MP algorithm. Experimental results show that the SFMP algorithm is able to eliminate waveform distortion of broadband ultrasound in viscoacoustic medium, which helps improve the accuracy of TOF measurement.

[1]  G. Van der Perre,et al.  The correlation between the SOS in trabecular bone and stiffness and density studied by finite-element analysis , 2008, IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control.

[2]  Tae-Seong Kim,et al.  High-resolution ultrasound transmission tomography , 2003, SPIE Medical Imaging.

[3]  S. L. Lee,et al.  Algebraic Reconstruction of Spatial Distributions of Acoustic Absorption within Tissue from Their Two-Dimensional Acoustic Projections , 1974 .

[4]  Stéphane Mallat,et al.  Matching pursuits with time-frequency dictionaries , 1993, IEEE Trans. Signal Process..

[5]  Abdallah Hammad,et al.  A LabVIEW Based Experimental Platform for Ultrasonic Range Measurements , 2007 .

[6]  Jørgen Arendt Jensen,et al.  Ultrasound fields in an attenuating medium , 1993 .

[7]  D. Brenner,et al.  Computed tomography--an increasing source of radiation exposure. , 2007, The New England journal of medicine.

[8]  N. Duric,et al.  Computerized Ultrasound Risk Evaluation (CURE) System: Development of Combined Transmission and Reflection Ultrasound with New Reconstruction Algorithms for Breast Imaging , 2002 .

[9]  Sung-Jae Kwon,et al.  Multimode ultrasound breast imaging using a new array transducer configuration. , 2010, Ultrasound in medicine & biology.

[10]  B T Cox,et al.  k-Wave: MATLAB toolbox for the simulation and reconstruction of photoacoustic wave fields. , 2010, Journal of biomedical optics.

[11]  Biswita C. Mozumdar.  The Control Of Radiation Exposure From CT Scans , 2002 .

[12]  C.M. Langton,et al.  The Measurement of Broadband Ultrasonic Attenuation in Cancellous Bone-A Review of the Science and Technology , 2008, IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control.

[13]  Tadeusz Gudra,et al.  Multi-parameter ultrasound transmission tomography of biological media. , 2006, Ultrasonics.

[14]  Qiang Wang,et al.  Non-linear Matching Pursuits and its apllication in bone mineral measurement , 2010, 2010 IEEE Instrumentation & Measurement Technology Conference Proceedings.

[15]  Willi A. Kalender,et al.  Computed tomography : fundamentals, system technology, image quality, applications , 2000 .

[16]  Patrick Flandrin,et al.  Improving the readability of time-frequency and time-scale representations by the reassignment method , 1995, IEEE Trans. Signal Process..

[17]  J. Saniie,et al.  Model-based estimation of ultrasonic echoes. Part I: Analysis and algorithms , 2001, IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control.

[18]  M. Vannier,et al.  Why do commercial CT scanners still employ traditional, filtered back-projection for image reconstruction? , 2009, Inverse problems.