| Zugriffsnummer | 23463 |
| Dokumenttyp | Konferenzartikel |
| Sprache | Englisch |
| Titel | Calibration of I-125 brachytherapy sources in terms of reference air kerma rate |
| Autor(in); Institution |
Selbach, Hans-Joachim; 6.2, Dosimetrie für Strahlentherapie und Röntgendiagnostik, PTB-Braunschweig
|
| Quelle/Jahr | World Congress on Medical Physics and Biomedical Engineering:(2009), 97 - 100 |
| Schriftenreihe | IFMBE proceedings: 25,1 |
| Availability | [CD-ROM] ; file name: papers\\2501\\25010097.pdf |
| Herausgeber(in) |
Dössel, Olaf
|
| ISBN | 978-3-642-03897-6 ; 978-3-642-03472-5 |
| Verlag | Berlin [u.a.]: Springer |
| Konferenzangaben | World Congress 2009 on Medical Physics and Biomedical Engineering, 11th International Congress of the IUPESM, München, 07-12, September, 2009, Germany |
| Freie Schlagworte | brachytherapy ; I-125 source ; reference air kerma rate ; primary standard ; calibration |
| Zusammenfassung | Since 2008 the Physikalisch-Technische Bundesanstalt (PTB) has, as the second National Primary Laboratory in the world and the first in Europe, been offering the calibration of I-125-brachytherapy sources (so-called prostate seeds) in terms of the quantity reference air kerma rate (RAKR). The primary standard used, a large air-filled parallel-plate extrapolation chamber with thin graphite front and back electrodes is presented, and the calibration process, including anisotropy and spectral photon distribution measurements are described. An uncertainty budget for the calibration, dependent on the properties of the source to be measured, is given. |
