Journal article
Shock wave sensors: I. Requirements and design
The Journal of lithotripsy & stone disease, v 3(1), pp 3-17
01 Jan 1991
PMID: 10149140
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
In the last 9 years, extracorporeal shock wave lithotripsy has become one of the preferred procedures for the treatment of urinary and gallbladder calculi. While there is still uncertainty as to the mechanisms of stone fragmentation, current hypotheses suggest that acoustical shock wave parameters such as rise time, peak compressional and rarefactional pressure, and frequency content may all influence the treatment's efficiency. Thus, optimization of lithotripsy treatment needs pressure sensors that can adequately characterize the shock wave field. This article presents and discusses the design of reliable, wideband, quantitative shock wave sensors made of piezoelectric material. The development, design, and performance characteristics of the sensors are presented. Sensor construction details are described, as are the methods used to characterize the sensor's acoustical performance. The key acoustical parameters of the sensor, its frequency response, and directivity pattern are presented; theory indicates that the probes feature uniform sensitivity over the frequency range up to 100 MHz. Preliminary experimental results indicate that piezoelectric polymer sensors made of polyvinylidene fluoride (PVDF) with a low acoustical impedance backing are suitable for lithotripter field measurements. The applicability of sensors based on fiber optics to shock wave measurements is also briefly discussed. In a companion article, shock wave measurement techniques are outlined and selected lithotripter test data are presented.
Metrics
10 Record Views
Details
- Title
- Shock wave sensors: I. Requirements and design
- Creators
- P A Lewin - Drexel UniversityM E Schafer - Drexel University
- Publication Details
- The Journal of lithotripsy & stone disease, v 3(1), pp 3-17
- Number of pages
- 15
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- School of Biomedical Engineering, Science, and Health Systems
- Web of Science ID
- WOS:A1991FA50200001
- Scopus ID
- 2-s2.0-0025717922
- Other Identifier
- 991019173878304721
UN Sustainable Development Goals (SDGs)
This publication has contributed to the advancement of the following goals:
InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Web of Science research areas
- Gastroenterology & Hepatology
- Urology & Nephrology