Real-time imaging of the process of stone crushing by ultrasound

Akira Ito, Shin Yoshizawa, Yukio Kaneko, Haruki Kume, Tadaichi Kitamura, Yoichiro Matsumoto

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

A new method of lithotripsy combining high and low frequency ultrasound has been investigated. This method controls generation of cavitation only on the stone surface and utilizes collapse pressure of the bubbles. In order to apply this method for clinical practice, it is important to monitor the process of stone crushing and behavior of cavitation from outside the body. In this study, ultrasound imaging was coupled with a therapeutic ultrasound system for real-time monitoring and targeting of stones. Stone crushing tests have been conducted in vitro and in vivo experiments. In vitro experiment, crushing process of a model stone in a polyacrylamide gel was observed with both ultrasound imaging and a digital video camera. It was observed with ultrasound imaging that the stone was crushed with ultrasound. In vivo experiment, a stone crushing experiment has been conducted in a pig bladder. And a mark of crushing was found on the surface of the stone taken out from the bladder after the irradiation, as well as in vitro experiment. The process of stone crushing in a pig bladder could be monitored with bi-plane ultrasound imaging from outside the body.

Original languageEnglish
Title of host publication6th International Symposium on Therapeutic Ultrasound
Pages342-348
Number of pages7
DOIs
Publication statusPublished - 2007 Sep 24
Externally publishedYes
Event6TH INTERNATIONAL SYMPOSIUM ON THERAPEUTIC ULTRASOUND - Oxford, United Kingdom
Duration: 2007 Aug 302007 Sep 2

Publication series

NameAIP Conference Proceedings
Volume911
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

Other6TH INTERNATIONAL SYMPOSIUM ON THERAPEUTIC ULTRASOUND
CountryUnited Kingdom
CityOxford
Period07/8/3007/9/2

Keywords

  • Cavitation
  • Lithotripsy
  • Real-time imaging
  • Ultrasound

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Fingerprint Dive into the research topics of 'Real-time imaging of the process of stone crushing by ultrasound'. Together they form a unique fingerprint.

Cite this