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Processing technique for ultrasound images

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Abstract

Ultrasound images are sometimes difficult to reproduce repeatedly and perfectly when operating a complicated instrument, especially in regard to the amplifier gain. Thus the logarithm-differential processing (l.d.p.) method described here is aimed at an improvement in the uniformity of the clinical information.

This paper discusses the use of the time gain control method and the role of a physical model of tissue, for example a parallel interface model, which has been used for the derivation of acoustical parameters from an echo signal.

The l.d.p. method has the following advantages: (i) each point in the image corresponds with the local acoustical parameters of the tissue; (ii) the image will be insensitive to the variations in the gain of the amplifier; and (iii) the l.d.p. method is very easy to operate as a real-time system.

A set of six clinical photographs is presented showing that a 20 dB variation in the gain of the amplifier may seriously affect the images. However, the processed images are insensitive to the value of amplifier gain.

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References

  • Anant, K., Nigan, A. (19??) A large aperture real-time equipment for vascular imaging. Proceedings of the Seventh International Symposium on Acoustical Holography and Imaging.

  • DeClercq, A., Ma Ginness, G. (1975) Adaptive gain control for dynamic ultrasound imaging. Ultrasonics Symposium Proceedings, IEEE Cat. 75 CKO 994-4SU, 59–63.

  • Lichtensten, B. et al., 1976. Medium characterization by the application of a deconvolution techniques in an acoustic pulse echo system.Ultrasound in Medicine,2,White, D. W. andBarnes, R. Eds., Plenum Press, 411–426.

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Authors and Affiliations

  1. Physics Department, Fu Dan University, Shanghai, China

    Zhao Zi Guang

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  1. Zhao Zi Guang
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Guang, Z.Z. Processing technique for ultrasound images. Med. Biol. Eng. Comput. 20, 94–98 (1982). https://doi.org/10.1007/BF02441857

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  • DOI: https://doi.org/10.1007/BF02441857

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