Special Section on Image Quality

Enhancement of ultrasound images by displacement, averaging, and interlacing

[+] Author Affiliations
Sonia H. Contreras Ortiz

University of Connecticut, Department of Biomedical Engineering, 260 Glenbrook Road, Storrs, Connecticut 06269-2247

James Joseph Macione

University of Connecticut, Department of Biomedical Engineering, 260 Glenbrook Road, Storrs, Connecticut 06269-2247

Martin D. Fox

University of Connecticut, Department of Biomedical Engineering, 260 Glenbrook Road, Storrs, Connecticut 06269-2247

J. Electron. Imaging. 19(1), 011014 (January 08, 2010). doi:10.1117/1.3271168
History: Received April 30, 2009; Revised September 08, 2009; Accepted October 05, 2009; Published January 08, 2010
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Ultrasound is a widely used medical imaging methodology because it is safe and relatively inexpensive. However, the quality of the images is affected by the point-spread function of the system, medium effects (such as refraction, reflection, and attenuation), and coherent wave interference or speckle. The present research studies the averaging of images that have been displaced laterally and displays them using an interlaced grid. The main goals are to reduce speckle and improve contrast-to-noise ratio and resolution. The point-spread function of the ultrasound scanner was estimated using a thin nylon thread within a water bath. Then, a set of images of a breast phantom (having lateral displacements smaller than the width of the point spread function) were averaged and interlaced. The results show significant improvements in signal-to-noise ratio and contrast-to-noise ratio.

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Citation

Sonia H. Contreras Ortiz ; James Joseph Macione and Martin D. Fox
"Enhancement of ultrasound images by displacement, averaging, and interlacing", J. Electron. Imaging. 19(1), 011014 (January 08, 2010). ; http://dx.doi.org/10.1117/1.3271168


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Bayesian 2-D deconvolution: effect of using spatially invariant ultrasound point spread functions. IEEE Trans Ultrason Ferroelectr Freq Control 2001;48(1):131-41.
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