摘要
目的:研究医用体外冲击波能流密度的计算和测量方法。方法:用2种方法测算能流密度。一种是均方根法,根据示波器可测量的冲击波压力波形参数和压力均方根值,计算出能流密度;另一种是直线近似法,仅仅根据冲击波压力波形参数,估算出能流密度。结果:用均方根法和直线近似法对SWT300型冲击波治疗机焦点处不同高压条件下的能流密度进行实际测量和计算,结果和国内外临床感受相一致;直线近似法估算的能流密度与均方根法计算出的能流密度误差一般情况下在10%以内,个别情况下接近14%。结论:测量和计算结果与相关文献公布的能流密度范围是一致的。估算值与实际值的偏差在大部分情况下是可以接受的。
Objective To study how to measure and calculate the energy flux density of the extracorporeal shock wave.Methods There were two ways to measure and calculate the energy flux density. One way was to calculate the energy flux density based on the pressure pulse waveform and pressure root mean square. The other was to estimate the energy flux density only by the pressure pulse waveform. Results Energy flux densities of the orthopedic shock wave device model SWT300, were measured and estimated in the various voltages. The results were similar to medical experience. The error between the calculated value and the estimated value was less than 10% in most cases, approximately 14% in a few cases. Conclusion The measuring data are consistent with the related reports, and the estimated values of the energy flux density are acceptable in most cases.
出处
《医疗卫生装备》
CAS
2014年第11期22-24,35,共4页
Chinese Medical Equipment Journal
关键词
体外冲击波疗法
导出脉冲声强积分
能流密度
水听器
extracorporeal shock wave therapy
derived pulse-intensity integral
energy flux density
hydrophone
