| Autor: |
V J, Pisciotta, X, Wu, J A, Fiedler, C F, Serago, M L, Calish-Watzich, J G, Schwade, P V, Houdek |
| Rok vydání: |
1992 |
| Předmět: |
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| Zdroj: |
Medical physics. 19(6) |
| ISSN: |
0094-2405 |
| Popis: |
Assessment of electron beam energy and its long term stability is part of standard quality assurance practice in radiation oncology. Conventional depth-ionization or depth-film density measurements are time consuming both in terms of data acquisition and analysis. A procedure is described utilizing ionization measurements at two energy specific depths. It is based on a linear relationship between electron beam energy and its practical range. Energy shifts within the range covered by the two measurement depths are easily resolved. Within a range of +/- 0.50 MeV (+/- 1.30 MeV) around the established mean incident energy of 5.48 MeV (20.39 MeV), the method accuracy is better than 0.10 MeV. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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