利用磁共振成像研究优化的 PASSAG 聚合物凝胶剂量计的剂量率和光子束能量相关性

IF 1.7 3区 医学 Q3 INSTRUMENTS & INSTRUMENTATION
Bo Liu, Shaima Haithem Zaki, Eduardo García, Amanda Bonilla, D. Thabit, Aya Hussein Adab
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引用次数: 0

摘要

目的:剂量率(DR)和光子束能量(PBE)似乎会影响聚合物凝胶剂量计的灵敏度和响应。在本项目中,我们评估了优化 PASSAG 凝胶剂量计(OPGD)的灵敏度和响应与剂量率和光子束能量的关系。材料与方法:我们制作了 OPGD,并用不同的 DR 和 PBE 对凝胶样品进行了辐照。然后,在不同剂量和辐照后时间内,通过核磁共振成像获得 OPGD 的灵敏度和响应(R 2)。结果:我们的分析表明,OPGD 的灵敏度和反应不受所评估的 DR 和 PBE 的影响。我们还发现,对于所评估的 DR 和 PBE,OPGD 的剂量分辨率值分别为 9 至 33 cGy 和 12 至 34 cGy。此外,数据还表明,OPGD 对 DR 和 PBE 的敏感性和反应依赖性在照射后的不同时间内没有变化。结论:本研究项目的结果表明,OPGD 的灵敏度和反应依赖性与 DR 和 PBE 无关。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
The investigation of dose rate and photon beam energy dependence of optimized PASSAG polymer gel dosimeter using magnetic resonance imaging
OBJECTIVE: It seems that dose rate (DR) and photon beam energy (PBE) may influence the sensitivity and response of polymer gel dosimeters. In the current project, the sensitivity and response dependence of optimized PASSAG gel dosimeter (OPGD) on DR and PBE were assessed. MATERIALS AND METHODS: We fabricated the OPGD and the gel samples were irradiated with various DRs and PBEs. Then, the sensitivity and response (R 2) of OPGD were obtained by MRI at various doses and post-irradiation times. RESULTS: Our analysis showed that the sensitivity and response of OPGD are not affected by the evaluated DRs and PBEs. It was also found that the dose resolution values of OPGD ranged from 9 to 33 cGy and 12 to 34 cGy for the evaluated DRs and PBEs, respectively. Additionally, the data demonstrated that the sensitivity and response dependence of OPGD on DR and PBE do not vary over various times after the irradiation. CONCLUSIONS: The findings of this research project revealed that the sensitivity and response dependence of OPGD are independent of DR and PBE.
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来源期刊
CiteScore
4.90
自引率
23.30%
发文量
150
审稿时长
3 months
期刊介绍: Research areas within the scope of the journal include: Interaction of x-rays with matter: x-ray phenomena, biological effects of radiation, radiation safety and optical constants X-ray sources: x-rays from synchrotrons, x-ray lasers, plasmas, and other sources, conventional or unconventional Optical elements: grazing incidence optics, multilayer mirrors, zone plates, gratings, other diffraction optics Optical instruments: interferometers, spectrometers, microscopes, telescopes, microprobes
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