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Proceedings Paper

Mapping Ultrasound Pulse--Echo Non-Stationarity
Author(s): D. A. Seggie; J. C. Hoddinott; S. Leeman; E. T. Costa
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Paper Abstract

The use of ultrasound pulse-echo signals to produce quantitative parameter mappings (or images) of an inhomogeneous medium is complicated by the presence of echo interference and transducer field effects. In this paper it is briefly discussed how the use of appropriate measurement techniques can counter the latter problem, leaving the speckle due to interference as the major source of artefact. It is shown in more detail how fluctuations in the instantaneous frequency of the received signals may be used to pin-point the location of the destructive interference in the pulse-echo signals. When assessing bulk attenuation values by a backscattering technique, this allows the data to be selectively edited to exclude interference-corrupted segments, considerably reducing the need for gross averaging over large amounts of data. The approach also points towards a technique for reducing the (artefactual) speckle-like appearance of attenuation images obtained via a backscattering technique.

Paper Details

Date Published: 10 September 1987
PDF: 7 pages
Proc. SPIE 0768, Pattern Recognition and Acoustical Imaging, (10 September 1987); doi: 10.1117/12.940273
Show Author Affiliations
D. A. Seggie, University College (U . K .)
J. C. Hoddinott, University College (U . K .)
S. Leeman, King's College (U . K .)
E. T. Costa, UNICAMP (Brazil)


Published in SPIE Proceedings Vol. 0768:
Pattern Recognition and Acoustical Imaging
Leonard A. Ferrari, Editor(s)

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