Title :
Sensors for characterization of extracorporeal shock wave devices
Author :
Gilmore, James M. ; Lewin, Peter A. ; Schafer, Mark E.
Author_Institution :
Drexel Univ., Philadelphia, PA, USA
Abstract :
The increasing use of extracorporeal shock wave lithotripsy (ESWL) in the treatment of kidney and gall bladder stones has intensified interest in studying the properties of the pressure waveforms used for the treatment. It is expected that the acoustic shock wave parameters, such as risetime, peak positive and peak negative pressure amplitudes, and frequency content can all influence the treatment´s efficiency. The authors evaluate three prototype piezoelectric sensors for their applicability to quantitative shock-wave measurements. The results of the evaluation indicate that PVDF (polyvinylidene fluoride) polymer transducers with a low acoustic backing have the greatest potential as shock wave-sensors.<>
Keywords :
biomedical equipment; biomedical ultrasonics; shock waves; extracorporeal shock wave devices; gall bladder stones; kidney stones; low acoustic backing; piezoelectric sensors; polyvinylidene fluoride polymer transducers; pressure waveforms;
Conference_Titel :
Engineering in Medicine and Biology Society, 1988. Proceedings of the Annual International Conference of the IEEE
Conference_Location :
New Orleans, LA, USA
Print_ISBN :
0-7803-0785-2
DOI :
10.1109/IEMBS.1988.94998
