Ultrasonic characterisation of diffuse liver disease—The relative importance of frequency content in the A-scan signal
| Autor: | R.N.M. MacSween, E. Barnett, R.A. Lerski, P.R. Mills, G. Watkinson, Patricia Morley |
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| Rok vydání: | 1982 |
| Předmět: |
Pathology
medicine.medical_specialty Frequency analysis Materials science Fourier Analysis Acoustics and Ultrasonics Radiological and Ultrasound Technology Acoustics Biophysics Fourier spectrum Signal law.invention Liver Cirrhosis Alcoholic law Content (measure theory) medicine Humans Radiology Nuclear Medicine and imaging Ultrasonic sensor Statistical analysis Texture (crystalline) Liver Diseases Alcoholic Fatty Liver Alcoholic Ultrasonography |
| Zdroj: | Ultrasound in Medicine & Biology. 8:155-160 |
| ISSN: | 0301-5629 |
| DOI: | 10.1016/0301-5629(82)90094-1 |
| Popis: | Successful methods of ultrasonic characterisation of alcohol-induced diffuse liver disease using texture analysis (Lerski et al. 1979, 1980a, b) have studied the radiofrequency (RF) A-scan ultrasonic signal. In the present paper the Fourier spectra of such signals have been partitioned and a statistical analysis implemented to determine the diagnostic usefulness of certain frequency groups present in the signal. Although this method has not, of itself, been found to compared favourably with texture analysis it has shown that useful information is present in the high frequency portion of the frequency spectra. This information would not be available if the smoothed and denodulated A-scan signal were studied. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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