| Zugriffsnummer | 27081 |
| Dokumenttyp | Zeitschriftenartikel |
| Peer Review | unbekannt |
| Sprache | Englisch |
| Titel | A comparative evaluation of three hydrophones and a numerical model in high intensity focused ultrasound fields. |
| Autor(in); Institution |
Haller, Julian; 1.6, Schall, PTB-Braunschweig
Jenderka, Klaus-Vitold; University of Applied Sciences Merseburg, Faculty of Engineering and Natural Sciences, GERMANY
Durando, Gianni; Istituto Nazionale di Ricerca Metrologica (INRIM), Torino, ITALY
Shaw, Adam; National Physical Laboratory (NPL), Teddington, UK
|
| Quelle/Jahr | Journal of the Acoustical Society of America: 131 (2012), 2, 1121 - 1130 |
| ISSN | 0001-4966 (PRINT) ; 1520-8524 (ONLINE) |
| DOI | |
| Verlag | Melville, NY: AIP |
| Klassifikationscode | PACS: 43.35.Yb ; PACS: 43.80.Vj |
| Freie Schlagworte | HIFU ; HITU ; hydrophones ; KZK model |
| Zusammenfassung | The pressure fields of two different high-intensity focused ultrasound (HIFU) transducers operated in burst mode were measured at acoustical power levels of 25 W and 50 W (continuous wave equivalent) with three different hydrophones: a fiber-optic displacement sensor, a commercial HIFU needle hydrophone, and a prototype of a membrane hydrophone with a protective coating against cavitation effects. Additionally, the fields were modelled using a freely available simulations software package. The measured waveforms, the peak pressure profiles, as well as the spatial-peak temporal-average intensities from the different devices and from the modelling are compared and possible reasons for differences are discussed. The results clearly show, that reliable pressure measurements in HIFU fields remain a difficult task concerning both the reliability of the measured values and the robustness of the sensors used: Only the fiber-optic hydrophone survived all four exposure regimes and the measured spatial-peak temporal-average intensities varied by a factor of up to 1.5 between the measurements and the modeling and between the measurements among themselves. |
Zitierung
Haller, J., Jenderka, K.-V., Durando, G., & Shaw, A. (2012). A comparative evaluation of three hydrophones and a numerical model in high intensity focused ultrasound fields. Journal of the Acoustical Society of America, 131(2), 1121–1130. https://doi.org/10.1121/1.3675003