Nawi, S. N. Mat and Khandaker, Mayeen Uddin and Sani, S. F. Abdul and Ung, N. M. and Lam, S. E. and Al-mugren, K. S. and Bradley, D. A. (2021) The potential of polymer pencil-lead graphite for clinical electron beam dosimetry. Nuclear Instruments & Methods in Physics Research Section A-Accelerators Spectrometers Detectors and Associated Equipment, 1010. ISSN 0168-9002, DOI https://doi.org/10.1016/j.nima.2021.165478.
Full text not available from this repository.Abstract
The dosimetric capabilities of tissue equivalent rod-shaped polymer pencil lead graphite (PPLG) has been investigated using an Elekta HD Linac, evaluated for electrons from 6 to 15 MeV and doses in the range 0.5 Gy up to 20 Gy. These encompass the major irradiation value ranges used in electron radiation therapy procedures. Parameters concerning thermoluminescence (TL) dosimetry have been investigated, including reproducibility, TL glow curve, the linearity of dose response, sensitivity, energy response and fading. The smaller diameter PPLG samples (0.3 mm) offer excellent dosimetric characteristics, superior to that of the 0.5 mm, 0.7 mm, and 0.9 mm diameter rods. This study confirms that low-cost Pencil Lead-Graphite (PLG) dosimeters provide energy independent dose sensitive linear response over a wide dose range. The small physical size offers unchallenged point detector spatial resolution, also enjoying minimal rates of fading and insensitivity to room lighting. As such, PPLG offers a viable alternative to current commercial dosimeters, well suited to applications in radiotherapy.
| Item Type: | Article |
|---|---|
| Funders: | Sunway University Research, Malaysia [Grant No: GRTIN-RSF-SHMS-CBP-03-2020], Deanship of Scientific Research at Princess Nourah bint AbdulRahman University, Riyadh, Research Groups Program Grant [Grant No: RGP-1440-0016(2)] |
| Uncontrolled Keywords: | Pencil-lead graphite; Linac; Thermoluminescence properties; Electron dosimetry; Radiotherapy |
| Subjects: | Q Science > QC Physics T Technology > T Technology (General) |
| Divisions: | Faculty of Medicine Faculty of Science |
| Depositing User: | Ms Zaharah Ramly |
| Date Deposited: | 21 Aug 2022 01:53 |
| Last Modified: | 21 Aug 2022 01:53 |
| URI: | http://eprints.um.edu.my/id/eprint/28787 |
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