Modeling of interaction between therapeutic ultrasound propagation and cavitation bubbles
| Autor: | Thomas Dreyer, Marko Liebler, Rainer E. Riedlinger |
|---|---|
| Rok vydání: | 2006 |
| Předmět: |
Materials science
Acoustics and Ultrasonics Acoustics medicine.medical_treatment Ultrasonic Therapy Physics::Medical Physics Radiation Dosage Models Biological Focused ultrasound Physics::Fluid Dynamics Pressure waveform Lithotripsy medicine Scattering Radiation Computer Simulation A fibers Radiometry Bubble density Microbubbles Hydrophone Therapeutic ultrasound business.industry Ultrasound Dose-Response Relationship Radiation Solutions Models Chemical Cavitation business |
| Zdroj: | Ultrasonics. 44 |
| ISSN: | 1874-9968 |
| Popis: | In medical applications of high intense focused ultrasound the mechanism of interaction between ultrasound waves and cavitation bubbles is responsible for several therapeutic effects as well as for undesired side effects. Based on a two-phase continuum approach for bubbly liquids, in this paper a numerical model is presented to simulate these interactions. The numerical results demonstrate the influence of the cavitation bubble cloud on ultrasound propagation. In the case of a lithotripter pulse an increased bubble density leads to significant changes in the tensile part of the pressure waveform. The calculations are verified by measurements with a fiber optical hydrophone and by experimental results of the bubble cloud dynamics. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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