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Real-Time Constant Depth Scanning with Phased Arrays

  • T. A. Whittingham
Part of the Acoustical Imaging book series (ACIM, volume 10)

Abstract

Constant depth scanning (C-scanning) differs from B-scanning in that the imaged cross-section lies in a plane which is perpendicular to the scanning beam rather than in a plane which contains it. The potential merits of C-scanning in medicine include the ability to image cross-sections which lie parallel or nearly parallel to the body surface, e.g. coronal cross-sections of the orbit or breast, and the ability to take advantage of strong focussing since large beamwidths before or after the focal zone are irrelevant. Since the high lateral resolution, high sensitivity and large angular aperture of a strongly focussed beam are qualities which are well suited to the detection and mapping of scattered ultrasound, C -scanning is a promising mode for tissue differentiation.

Keywords

Focal Length Continuous Wave Delay Line Field Point Range Resolution 
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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References

  1. Green, P.S., Schaefer, L.F., Jones, E.D. and Suarez, J.R., 1974. A new high-performance ultrasonic camera, in: “Acoustical Holography and Imaging, Vol. 5”, P.S. Green, ed., Plenum Press.Google Scholar
  2. Hill, C.R. and Carpenter, D.A., 1976, Ultrasonic echo imaging of tissues: instrumentation, Brit. J. Radiol., 49: 238–243.CrossRefGoogle Scholar
  3. Welsby, V.G., Creasey, D.J. and Barnickle, N., 1973, Narrow beam focussed array for electronically scannered sonar: some experimental results, J. Sound and Vibration, 30: 237–248.ADSCrossRefGoogle Scholar

Copyright information

© Plenum Press, New York 1982

Authors and Affiliations

  • T. A. Whittingham
    • 1
  1. 1.Regional Medical Physics DepartmentNewcastle General HospitalNewcastle upon TyneEngland

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