With converged shock wave,extracorporeal shock wave lithotripsy(ESWL)has become a preferable way to crush human calculi because of its advantages of efficiency and non-intrusion.Nonlinear spheroidal beam equations(SBE)are employed to illustrate the acoustic wave propagation for transducers with a wide aperture angle.To predict the acoustic field distribution precisely,boundary conditions are obtained for the SBE model of the monochromatic wave when the source is located on the focus of an ESWL transducer.Nu...
【英文摘要】
With converged shock wave, extracorporeal shock wave lithotripsy(ESWL) has become a preferable way to crush human calculi because of its advantages of efficiency and non-intrusion. Nonlinear spheroidal beam equations(SBE) are employed to illustrate the acoustic wave propagation for transducers with a wide aperture angle. To predict the acoustic field distribution precisely, boundary conditions are obtained for the SBE model of the monochromatic wave when the source is located on the focus of an ESWL transdu...
【基金】
Project supported by the National Basic Research Program of China(Grant Nos.2012CB921504 and 2011CB707902);
the National Natural Science Foundation of China(Grant No.11274166);
the State Key Laboratory of Acoustics,Chinese Academy of Sciences(Grant No.SKLA201401);
the China Postdoctoral Science Foundation(Grant No.2013M531313)
【更新日期】
2015-02-04
【分类号】
O175
【正文快照】
1.Introductionlarge errors due to parabola approximation.[4,5]The transduc-ers with wide aperture angles have performed with remark-As an effective and non-intrusive medical technique pro-able superiority in acoustic focusing effect,focusing area,andposed