Processing of diagnostic ultrasound signals
- 1 January 1984
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE ASSP Magazine
- Vol. 1 (1), 19-26
- https://doi.org/10.1109/MASSP.1984.1162220
Abstract
Ultrasound signals reflected from the human liver contain significant information about its condition. Several techniques have been developed to process such signals. In this paper, two approaches are described for estimating the slope of the acoustic attenuation coefficient, denoted by β, which provides important cues about the condition of diffuse liver disease. The first is a nonparametric approach which determines the β value from the slope of log periodogram differences. The second is a parametric approach which requires a Gaussian-shaped spectrum and determines the β value from s shift in the spectral center-frequency. A zero-crossing count procedure allows the parametric approach to be implemented with minimal hardware and in real-time. Simulated and actual signals illustrate the two approaches.Keywords
This publication has 8 references indexed in Scilit:
- Estimating acoustic attenuation from reflected ultrasound signals: Comparison of spectral-shift and spectral-difference approachesIEEE Transactions on Acoustics, Speech, and Signal Processing, 1984
- Spectral characterization and attenuation measurements in ultrasoundUltrasonic Imaging, 1983
- Ultrasonic Tissue CharacterizationAnnual Review of Biophysics and Bioengineering, 1982
- Variation of acoustic attenuation coefficient slope estimates for in vivo liverJapanese Journal of Clinical Oncology, 1982
- Ultrasonography of alcoholic liver disease with histological correlation.Radiology, 1981
- Estimating the Acoustic Attenuation Coefficient Slope for Liver from Reflected Ultrasound SignalsIEEE Transactions on Sonics and Ultrasonics, 1979
- Ultrasound in Medical DiagnosisScientific American, 1978
- The use of fast Fourier transform for the estimation of power spectra: A method based on time averaging over short, modified periodogramsIEEE Transactions on Audio and Electroacoustics, 1967