Speckle Reduction In Medical Ultrasound Via Spatial Compounding

G. E. Trahey; S. W. Smith; O. T. von Ramm

doi:10.1117/12.975405

12 June 1986 Speckle Reduction In Medical Ultrasound Via Spatial Compounding

G. E. Trahey, S. W. Smith, O. T. von Ramm

Proceedings Volume 0626, Application of Optical Instrumentation in Medicine XIV and Picture Archiving and Communication Systems; (1986) https://doi.org/10.1117/12.975405
Event: Application of Optical Instrumentation in Medicine XIV and Picture Archiving and Communication Systems (PACS IV) for Medical Applications, 1986, Newport Beach, CA, United States

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.

Citation Download Citation

G. E. Trahey, S. W. Smith, and O. T. von Ramm "Speckle Reduction In Medical Ultrasound Via Spatial Compounding", Proc. SPIE 0626, Application of Optical Instrumentation in Medicine XIV and Picture Archiving and Communication Systems, (12 June 1986); https://doi.org/10.1117/12.975405

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