| Zugriffsnummer | 23218 |
| Dokumenttyp | Konferenzartikel |
| Sprache | Englisch |
| Titel | Metrology of HITU fields |
| Autor(in); Institution |
Jenderka, Klaus-Vitold; 1.6, Schall, PTB-Braunschweig
Beißner, Klaus; 1.6, Schall, PTB-Braunschweig
Haller, Julian; 1.6, Schall, PTB-Braunschweig
|
| Quelle/Jahr | NAG/DAGA 2009 : International Conference on Acoustics, Rotterdam, 23 - 26 March 2009 ; proceedings:(2009), 325 - 327 |
| Availability | [CD-ROM] ; file name:data\\articles\\000147.pdf |
| Herausgeber(in) |
Boone, Marinus M.
|
| ISBN | 978-3-9808659-6-8 |
| Verlag | Berlin: DEGA |
| Konferenzangaben | International Conference on Acoustics, NAG/DAGA 2009, Rotterdam, 23-26, March, 2009, The Netherlands |
| Klassifikationscode | PACS: 43.35.yb ; PACS: 87.50.yk ; PACS: 87.50.yt ; PACS: 43.35.+d |
| Zusammenfassung | High Intensity Therapeutic Ultrasound (HITU) is a non-invasive technique for the treatment of various types of cancer, as well as non-malignant pathologies by inducing localized necrosis of the tissue. Even though HITU is already in clinical use, this technique is still an emerging therapeutic procedure, with a lack of knowledge on reliable and stable treatment planning and monitoring procedures. A crucial step for the prediction of the desired temperature rise in a HITU-treated region is the measurement of the ultrasound output power. The evaluation of tissue thermometry methods, using MR or ultrasound itself, is important for the treatment monitoring, as well as for choosing the appropriate ultrasound power for a desired local intensity and temperature rise respectively. While ultrasound fields are well-investigated for output powers smaller than 50 W, this paper describes first results of measurements in much stronger, highly focused fields (> 300 W ultrasound power at 1.5 MHz) using an absorbing target arranged close to the transducer. The measurement uncertainties are discussed. |
