Title :
A new method for estimating the acoustic attenuation coefficient of tissue from reflected ultrasonic signals
Author :
Liu, Dong-lai ; Saito, Masao
Author_Institution :
Inst. of Med. Electron., Tokyo Univ., Japan
fDate :
3/1/1989 12:00:00 AM
Abstract :
The parameter characterizing the acoustic attenuation in soft tissues is an indicator of tissue state. A method which features autoregressive deconvolution and spectral smoothing is proposed for estimation of the parameter from ultrasonic signals reflected from the tissue. The results of simulation and of processing actual liver data show that the standard deviation of the estimation is approximately halved by this method, compared to the traditional spectral differences method
Keywords :
biomedical ultrasonics; ultrasonic absorption; acoustic attenuation coefficient; autoregressive deconvolution; liver; medical ultrasound; reflected ultrasonic signals; soft tissues; spectral differences method; spectral smoothing; tissue state; Attenuation; Biological tissues; Clinical diagnosis; Deconvolution; Frequency estimation; Liver; Pathology; Reflection; Signal processing; Smoothing methods;
Journal_Title :
Medical Imaging, IEEE Transactions on
