体外冲击波碎石术（ESWL）引起的宏观空化：体外研究

Macroscopic ESWL-induced cavitation: in vitro studies.

作者信息

Pittomvils G, Lafaut J P, Vandeursen H, De Ridder D, Baert L, Boving R

机构信息

Catholic University Leuven, Department of Didactical Physics, Belgium.

出版信息

Ultrasound Med Biol. 1995;21(3):393-8. doi: 10.1016/0301-5629(94)00108-p.

DOI:10.1016/0301-5629(94)00108-p

PMID:7645130

Abstract

The rarefaction shock wave results in a liquid failure at the target/fluid interface. In the wake of the reflected ESWL-induced shock wave, a macroscopic cavity is generated in filtered water. The cavity implosion induces a large shock wave, divulging the bubble existence and lifetime. The existence of this shock wave is revealed by the diffraction of a He-Ne laser beam. The induced cavitation bubbles are registered by a camera, illuminated by an externally triggered stroboscope (exposure time 10 microseconds). The radius of the large cavity bubble, generated at the stone surface, is time dependent as theoretically predicted.

摘要

稀疏冲击波会导致目标/流体界面处的液体破坏。在反射的体外冲击波碎石术（ESWL）诱发的冲击波之后，过滤水中会产生一个宏观空腔。空腔内爆会诱发一个大的冲击波，从而揭示气泡的存在和寿命。这种冲击波的存在通过氦氖激光束的衍射得以显现。诱发的空化气泡由一台相机记录，相机由外部触发的频闪仪照明（曝光时间为10微秒）。如理论预测的那样，在结石表面产生的大空腔气泡的半径随时间变化。