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Temporal and spatial characteristics of nonlinear acoustic field generated by an extracorporeal shockwave therapy device: Modeling and measurements. (165th Meeting of the Acoustical Society of America)статья
Дата последнего поиска статьи во внешних источниках: 27 мая 2015 г.
- Авторы: Karzova M., Khokhlova V., Perez C., Matula T.
- Журнал: Journal of the Acoustical Society of America
- Том: 133
- Номер: 5
- Год издания: 2013
- Издательство: Acoustical Society of America
- Местоположение издательства: United States
- Первая страница: 3587
- DOI: 10.1121/1.4806611
- Аннотация: Extracorporeal shock wave therapy (ESWT) refers to the use of focused shock pulses to treat certain musculoskeletal disorders. Although the technology is used clinically, acoustic characteristics of ESWT fields and their relation to the bioeffects induced are not fully understood. In the present work the acoustic field of a clinical ESWT device (Duolith SD1) was characterized in water using a combined measurement and modeling approach. Simulation model was based on the nonlinear KZK equation; the boundary condition was based on the pressure waveforms measured in a plane 5 mm away from the therapy head. The model was used to simulate and to analyze pressure waveforms along the axis of the therapy head, 2D spatial distributions of peak pressures, and the shock structure. The modeling results were found in a good agreement with experimental data. Simulations performed for different initial source pressure amplitudes showed that a shock is not formed at the focus, even at the maximum operational level of the device. Predictions from the modeling at higher output settings suggest that a true shock would develop if the initial pressure output were doubled. Work supported in parts by RFBR 12-02-31830 and 12-02-31418 grants and student stipend from the French Government.
- Добавил в систему: Хохлова Вера Александровна