| Zugriffsnummer | 23415 |
| Dokumenttyp | Zeitschriftenartikel |
| Sprache | Englisch |
| Titel | The depth-dependence of the biological effectiveness of Co-60 gamma rays in a large absorber determined by dicentric chromosomes in human lymphocytes |
| Autor(in); Institution |
Schmidt, Ernst; University of Munich, Radiobiological Institute, Munich, GERMANY
Roos, Hartmut; University of Munich, Radiobiological Institute, Munich, GERMANY
Kramer, Hans-Michael; 6.2, Dosimetrie für Strahlentherapie und Röntgendiagnostik, PTB-Braunschweig
|
| Quelle/Jahr | Radiation Protection Dosimetry: 130 (2008), 4, 442 - 446 |
| ISSN | 0144-8420 |
| DOI | |
| Verlag | Oxford: Oxford Univ. Press |
| Freie Schlagworte | relative biological effectiveness ; Co-60 gamma rays ; depth dependence ; polymethylmethacrylate phantom |
| Zusammenfassung | Radiobiological evidence is shown concerning a significant depth-dependence of the maximum relative biological effectiveness at limiting low doses (RBEM) of Co-60 gamma rays in a cubic polymethylmethacrylate (PMMA) phantom of 30 cm edge length. Using the dose–response curve for the dicentric data in human lymphocytes obtained in the present experiment at a depth of 20 cm, together with the comprehensive and consistent data set determined earlier at smaller depths of the PMMA phantom, there is an increase in the RBEM value by a factor of 2.18 ± 1.25 at a depth of 20 cm relative to 1 cm in the phantom. All the dicentric data are based on identical exposure durations and irradiation temperatures as well as identical culture and evaluation conditions, with blood from the same donor. |
Zitierung
Schmidt, E., Roos, H., & Kramer, H.-M. (2008). The depth-dependence of the biological effectiveness of Co-60 gamma rays in a large absorber determined by dicentric chromosomes in human lymphocytes. Radiation Protection Dosimetry, 130(4), 442–446. https://doi.org/10.1093/rpd/ncn069