Acoustic Imaging by Wave Field Extrapolation Part II: Practical Aspects

  • J. Ridder
  • A. J. Berkhout
  • L. F. v.d. Wal
Part of the Acoustical Imaging book series (ACIM, volume 10)


In this paper the practical aspects of acoustic imaging will be envisaged, based on the theoretical considerations given in the foregoing paper (Part I).

Three different methods of data acquisition, particularly suitable in performing synthetic focussing, will be discussed, i.e.
  • Plane wave method;

  • Zero offset method;

  • Complete dataset method.

It will be shown that the complete dataset allows the most general imaging technique and therefore may be used in inhomogeneous media. Both the plane wave and the zero offset method can be derived from the complete dataset and may be considered as simplified versions. However, some restrictions have to be made. The plane wave method is computationally simpler but it assumes that a plane wave stays a plane wave during propagation. From a data acquisition point of view the zero offset method is least intricate, but due to motion artefacts serious problems may be encountered during imaging.

The discussion of the three techniques will be based on the following criteria:
  • Instrumentation

  • Resolution

  • Imaging

  • Signal to noise ratio

Finally an example will be given, showing the result obtainable with a zero offset data acquisition technique using a tissue equivalent ultrasound phantom.


Plane Wave Practical Aspect Lateral Resolution Complete Dataset Depth Level 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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  2. Kak, A.L., Fry, F.J., 1976, Acoustic impedance profiling: an anaZytical and physical model study; Proceedings of Ultrasonic Tissue Characterization Seminar, NBS Special Publication 453.Google Scholar
  3. Wells, P.N.T., 1977, Biomedical Ultrasonics; Academic Press.Google Scholar
  4. Berkhout, A.J., 1980, Seismic migration - imaging of acoustic energy by wave field extrapolation-: Amsterdam/New York, Elsevier North Holland Publ. Comp.Google Scholar

Copyright information

© Plenum Press, New York 1982

Authors and Affiliations

  • J. Ridder
    • 1
  • A. J. Berkhout
    • 1
  • L. F. v.d. Wal
    • 1
  1. 1.Department of Applied Physics, Group of AcousticsDelft University of TechnologyDelftThe Netherlands

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