| Zugriffsnummer | 24645 |
| Dokumenttyp | Konferenzartikel in Zeitschrift |
| Peer Review | mit Peer Review |
| Sprache | Englisch |
| Titel | Interlaboratory comparison of HITU power measurement capabilities |
| Autor(in); Institution |
Jenderka, Klaus-Vitold; 1.6, Schall, PTB-Braunschweig
Durando, Gianni; Istituto Nazionale di Ricerca Metrologica (INRIM), Torino, ITALY
Karaböce, Baki; Tübitak Ulusal Metroloji Enstitüsü, Gebze-Kcaeli, TURKEY
Rajagopal, Srinath; National Physical Laboratory (NPL), Teddington, UK
Shaw, Adam; National Physical Laboratory (NPL), Teddington, UK
|
| Quelle/Jahr | Advanced Metrology for Ultrasound in Medicine 2010 (AMUM2010). Journal of Physics: Conference Series: 279 (2011), 129 - 134 |
| Artikelnummer | 012015 |
| ISSN | 1742-6588 (PRINT) ; 1742-6596 (ONLINE) |
| ISBN | 978-1-61782-908-6 |
| DOI | |
| Verlag | Bristol: IOP |
| Konferenzangaben | Advanced Metrology for Ultrasound in Medicine (AMUM), Teddington, 12-14, May, 2010, UK |
| Klassifikationscode | PACS: 43.35.+d ; PACS: 87.50.yk ; PACS: 87.50.yt ; PACS: 43.80.VJ ; PACS: 87.19.R ; PACS: 87.19.X |
| Freie Schlagworte | ultrasound ; output power ; HITU |
| Zusammenfassung | High Inteensity Therapeutic Ultrasound (HITU) is gaining in importance among the spectrum of therapeutic options to combat cancer. HITU is already approved and in clinical use for the treatment of organs like prostate, liver and uterus. Nevertheless, the metrology of the applied high power ultrasound fields, and in consequence a reliable treatment planning and monitoring, is still a challenge. As part of an European Metrology Research Programme project the four National Metrology Institutes from UK, Germany, Italy and Turkey conducted an interlaboratory comparison of their power measurement capabilities at power levels of 5, 25, 75 and 150 W at frequencies of 1.1, 1.5 and 3.3 MHz. The task was to measure the total, time-averaged ultrasonic output power, emitted by the circulated transducers under specified electrical excitation conditions into an anechoic water load, and the actual RMW transducer input voltage. The output value to be reported was the electro-acoustic radiation conductance including the associated standard and expanded uncertainties. Several different measurement techniques were applied to have further insight into HITU power measurement. The deviations from the calculated comparison reference value found for the different techniques are discussed and conclusions for further improvement of measuring procedures are drawn. |
| Kostenfreier Zugang | Freier Zugang |