Abdullah, Nooradilah and Bradley, D. A. and Nisbet, A. and Zaman, Z. Kamarul and Deraman, S. S. and Noor, Noramaliza Mohd (2022) Dosimetric characteristics of fabricated germanium doped optical fibres for a postal audit of therapy electron beams. Radiation Physics and Chemistry, 200. ISSN 0969-806X, DOI https://doi.org/10.1016/j.radphyschem.2022.110346.
Full text not available from this repository.Abstract
The dosimetric characteristics of germanium (Ge) doped optical fibres are investigated as a potential dosimetric alternative for electron beam therapy postal audits. The dosimetric characteristics of 6 mol% Ge-doped optical fibres fabricated as cylindrical fibres (CF) and flat fibres (FF) are established in terms of signal fading, linearity of dose-response, beam energy- and dose rate dependence. Pilot electron beam therapy audit study irradiations are made with a linear accelerator located at the Royal Surrey County Hospital, applying International Atomic Energy Agency (IAEA) standard irradiation procedures for reference and non-reference conditions. Results for the CF and FF show fading of 26% and 20% respectively at 120 days post-irradiation. For a 6 MeV electron beam the dose-response is observed to be linear over the dose range 1-3 Gy, the least determination coefficient, R2, being 0.985. The results of the electron beam therapy audit are within the tolerance limit of 5% recommended by the International Commission on Radiation Units and Measurements (ICRU) Report No. 24, with a maximum deviation of 4% for FF at a 6 MeV electron beam under non-reference conditions. In conclusion, the fabricated Ge-doped optical fibres are seen to offer suitability for use as an alternative dosimeter to TLD-100 in electron beam therapy postal audit.
| Item Type: | Article |
|---|---|
| Funders: | High Impact Putra Grant, Universiti Putra Malaysia, Jabatan Perkhidmatan Awam Malaysia (Hadiah Latihan Persekutuan) |
| Uncontrolled Keywords: | Fabricated Ge-Doped optical fibres; Electron beam therapy audit; Reference and non -reference conditions |
| Subjects: | R Medicine |
| Depositing User: | Ms. Juhaida Abd Rahim |
| Date Deposited: | 27 Sep 2023 03:56 |
| Last Modified: | 27 Sep 2023 03:56 |
| URI: | http://eprints.um.edu.my/id/eprint/40817 |
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