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Proceedings Paper

Speckle Reduction In Medical Ultrasound Via Spatial Compounding
Author(s): G. E. Trahey; S. W. Smith; O. T. von Ramm
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Paper Abstract

In order to design improved spatial compounding ultrasound scanning systems it is necessary to determine the correlation of speckle patterns as a function of aperture translation. We have conducted experiments measuring the speckle correlation as a function of lateral aperture translation for linear phased array pulse-echo ultrasonic imaging systems. Results are presented for variable frequency, range, transducer length, focus error, and reflecting material. Tests were conducted on two commercially available and one research imaging system. The measured rates of correlation coefficient decrease are independent of frequency, reflecting material, and target range when the target is in the focal zone. The experimentally determined correlations are used to derive the optimal spatial separation of images for speckle reduction, and the benefits of spatial compounding for a fixed aperture system discussed.

Paper Details

Date Published: 12 June 1986
PDF: 11 pages
Proc. SPIE 0626, Application of Optical Instrumentation in Medicine XIV and Picture Archiving and Communication Systems, (12 June 1986); doi: 10.1117/12.975405
Show Author Affiliations
G. E. Trahey, Duke University (United States)
S. W. Smith, Duke University and Food and Drug Administration (United States)
O. T. von Ramm, Duke University (United States)


Published in SPIE Proceedings Vol. 0626:
Application of Optical Instrumentation in Medicine XIV and Picture Archiving and Communication Systems
Samuel J. Dwyer; Roger H. Schneider, Editor(s)

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