Secondary sound classification for the assessment of focus positioning in shock-wave lithotripsy

Godkänd; 1993; 20080221 (ysko)
A problem encountered when using acoustic shock-waves for kidney stone disintegration is that the positioning of the focus relative to a stone, for the best possible fragmenting effect, is crtitical. The standard methods for focus positioning are ultrasound or x-ray imaging. These methods are, however, not always sufficient and a better indication of a well positioned focus would be valuable. The secondary sound emitted as a result of each shock-wave has been found to contain valuable information. A skilled operator is able to hear from the timbre of these sound pulses when the positioning of the focus is adequate. A method for the automatic evaluation of secondary sounds, using a computer, is developed in this work.

Ingår i:IX Nordic Meeting on Medical and Biological EngineeringLund : Medicinsk Teknik

Av författaren/redakt...: Grennberg, Ander ...; Almquist, Lars-O ...; Holmner, Nils-Gu ...; Olsson, Lennart

Om ämnet

TEKNIK OCH TEKNOLOGIER: TEKNIK OCH TEKNO ...; och Elektroteknik oc ...; och Signalbehandling

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