Spectral characterization and comparison of EBT3, EBT4, and EBT-XD radiochromic films.

IF 3.3 3区 医学 Q2 ENGINEERING, BIOMEDICAL
Stevan Pecić, Slobodan Devic, Ivan Belca, Milos Slavoljub Mosic, Ljubomir Kurij, Borko Nidžović, Strahinja Stojadinovic
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Abstract

This study analyzed the spectral response of EBT3, EBT4, and EBT-XD radiochromic films using absorption spectroscopy. The primary focus was on characterizing the evolution of spectral signatures across a range of absorbed doses, thereby elucidating the unique dose-dependent response profiles of each film type. Ten samples of each film type were subjected to open field irradiation within their designated dose ranges (1-20 Gy for EBT3 and EBT4, 1-50 Gy for EBT-XD). The corresponding absorption spectra were recorded and studied via decomposition and parameterization of dose-dependent spectral features. Lorentzian profiles were employed for spectral decomposition. Each film type displayed unique spectral signatures with distinct absorption peaks: nine for EBT3, eleven for EBT4, and twelve constituent profiles for EBT-XD. Notably, the EBT4 film demonstrated a slight difference in the blue part of the absorption spectrum and a change in the response, relative to its EBT3 predecessor. Orientation dependence of the film spectra was most pronounced for the EBT3 film type, followed by a declining trend across EBT4 and EBT-XD films. Absorption spectroscopy portrayed distinct spectral fingerprints of the studied film types, aiding the selection of the most suitable film for specific applications.

本研究利用吸收光谱分析了 EBT3、EBT4 和 EBT-XD 放射性变色薄膜的光谱响应。主要重点是描述吸收剂量范围内光谱特征的演变,从而阐明每种薄膜类型独特的剂量依赖性响应曲线。通过对剂量相关光谱特征进行分解和参数化,记录并研究了相应的吸收光谱。每种类型的薄膜都显示出独特的光谱特征,具有不同的吸收峰:EBT3 有九个,EBT4 有十一个,EBT-XD 有十二个。值得注意的是,与 EBT3 相比,EBT4 薄膜吸收光谱的蓝色部分略有不同,响应也有所变化。EBT3 薄膜光谱的方向依赖性最为明显,随后 EBT4 和 EBT-XD 薄膜的方向依赖性呈下降趋势。
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来源期刊
Physics in medicine and biology
Physics in medicine and biology 医学-工程:生物医学
CiteScore
6.50
自引率
14.30%
发文量
409
审稿时长
2 months
期刊介绍: The development and application of theoretical, computational and experimental physics to medicine, physiology and biology. Topics covered are: therapy physics (including ionizing and non-ionizing radiation); biomedical imaging (e.g. x-ray, magnetic resonance, ultrasound, optical and nuclear imaging); image-guided interventions; image reconstruction and analysis (including kinetic modelling); artificial intelligence in biomedical physics and analysis; nanoparticles in imaging and therapy; radiobiology; radiation protection and patient dose monitoring; radiation dosimetry
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