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Image and Signal Processing in Diagnostic Ultrasound Imaging

D. L. Hykes, MS

Radiology Department, Aultman Hospital, Canton, Ohio; Radiology Department, St. Joseph Hospital and Health Center, Lorain, Ohio.

An overview of signal-processing techniques used in the acquisition, display, manipulation, and analysis of echo scan data is presented. The principles of time-gain compensation, selective enhancement, log compression, fill-in interpolation, edge enhancement, image updating, write zoom, gray scale mapping, black/white inversion, freeze frame, frame averaging, read zoom, thresholding, contrast enhancement, filtering, and region-of-interest definition are reviewed. The concept of gray scale mapping, which dictates how the stored scan data are displayed, is explained with many illustrative examples.

Key Words: signal processing • computers • digital imaging

Journal of Diagnostic Medical Sonography, Vol. 5, No. 5, 231-239 (1989)
DOI: 10.1177/875647938900500502


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