DocumentCode :
3317607
Title :
A new shock pressure waveform to amplify transient cavitation effect
Author :
Cathignol, D. ; Tavakkoii, J. ; Birer, A. ; Arefiev, A. ; Prigent, M.
Author_Institution :
Inst. Nat. de la Sante et de la Recherche Med., Lyon, France
Volume :
2
fYear :
1997
fDate :
5-8 Oct 1997
Firstpage :
1357
Abstract :
In this work, the authors intend to study the influence of the temporal form of a pressure pulse waveform on the destructive effects of transient cavitation. Two different shock pressure-time waveforms with nearly the same acoustic energy content were used. The first pressure waveform starts with a tensile wave followed by a compressive one, and the second pressure waveform starts with a compressive wave followed by a tensile one. Based on the measurements presented in this work, the authors can state that the first time-waveform amplifies systematically the cavitation effect. This conclusion was achieved from 3 different experiments, i.e. cavitation bubble collapse time, disintegration efficacy of plaster balls (a kidney stone-mimicking material), and macroscopic study of lesions in Agar-Agar gel
Keywords :
biomedical ultrasonics; bubbles; cavitation; kidney; radiation therapy; shock wave effects; Agar-Agar gel; acoustic cavitation; acoustic energy content; compressive wave; destructive effects; disintegration efficacy; lesions; plaster balls; pressure pulse waveform temporal form; shock pressure waveform; tensile wave; therapeutic ultrasound; transient cavitation effect amplification; Acoustic measurements; Acoustic pulses; Acoustic waves; Electric shock; Lesions; Pressure measurement; Pulse measurements; Shock waves; Time measurement; Ultrasonic imaging;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Ultrasonics Symposium, 1997. Proceedings., 1997 IEEE
Conference_Location :
Toronto, Ont.
ISSN :
1051-0117
Print_ISBN :
0-7803-4153-8
Type :
conf
DOI :
10.1109/ULTSYM.1997.661828
Filename :
661828
Link To Document :
بازگشت