Title :
A Narrowband Pulse-Echo Technique for In Vivo Ultrasonic Attenuation Estimation
Author :
Ophir, J. ; McWhirt, R.E. ; Maklad, N.F. ; Jaeger, P.M.
Author_Institution :
Department of Radiology, University of Texas Medical School
fDate :
3/1/1985 12:00:00 AM
Abstract :
The principles of a narrowband technique for pulse echo attenuation measurements are presented. Experiments are described which compare the attenuation in tissue-mimicking phantoms, measured by known methods, to the attenuation measured by the present technique. The effects of various experimental parameters on the results are investigated. The attenuation in spleens of canine models and in livers of human volunteers is presented.
Keywords :
Acoustic beams; Amplitude estimation; Attenuation measurement; Bandwidth; Frequency domain analysis; Frequency estimation; In vivo; Narrowband; Ultrasonic variables measurement; Wideband; Mathematics; Models, Structural; Models, Theoretical; Transducers; Ultrasonography;
Journal_Title :
Biomedical Engineering, IEEE Transactions on
DOI :
10.1109/TBME.1985.325530
