1.
Ultrasound Med Biol
; 17(5): 491-5, 1991.
Article
in English
| MEDLINE
| ID: mdl-1962350
ABSTRACT
Secondary sound emission, partly in the audible frequency range, from shock wave disintegration of kidney stones has been recorded during the treatment of two patients. A skilled operator can determine by listening if the stone is hit by the shock-wave or not. Spectral analysis of these recordings show differences between the sounds which can be used to evaluate the fragmenting effect on the stone. Results are presented of a preliminary discriminating method based on parameters in an autoregressive signal model.