10 September 1987 Mapping Ultrasound Pulse--Echo Non-Stationarity
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Proceedings Volume 0768, Pattern Recognition and Acoustical Imaging; (1987) https://doi.org/10.1117/12.940273
Event: International Symposium on Pattern Recognition and Acoustical Imaging, 1987, Newport Beach, CA, United States
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.
© (1987) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
D. A. Seggie, J. C. Hoddinott, S. Leeman, E. T. Costa, "Mapping Ultrasound Pulse--Echo Non-Stationarity", Proc. SPIE 0768, Pattern Recognition and Acoustical Imaging, (10 September 1987); doi: 10.1117/12.940273; https://doi.org/10.1117/12.940273
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