首页> 外文会议>Optical sensing and detection III >Terbium-doped gadolinium oxysulfide (Gd2O2S:Tb) scintillation-based polymer optical fibre sensor for real time monitoring of radiation dose in oncology
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Terbium-doped gadolinium oxysulfide (Gd2O2S:Tb) scintillation-based polymer optical fibre sensor for real time monitoring of radiation dose in oncology

机译:掺杂的氧硫化g(Gd2O2S:Tb)闪烁型聚合物光纤传感器,用于实时监测肿瘤学中的辐射剂量

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摘要

A PMMA based plastic optical fibre sensor for use in real time radiotherapy dosimetry is presented. The optical fibre tip is coated with a scintillation material, terbium-doped gadolinium oxysulfide (Gd2O2S:Tb), which fluoresces when exposed to ionising radiation (X-Ray). The emitted visible light signal penetrates the sensor optical fibre and propagates along the transmitting fibre at the end of which it is remotely monitored using a fluorescence spectrometer. The results demonstrate good repeatability, with a maximum percentage error of 0.5% and the response is independent of dose rate.
机译:提出了一种用于实时放射治疗剂量测定的基于PMMA的塑料光纤传感器。光纤尖端涂有闪烁材料,即ter掺杂的氧硫化((Gd2O2S:Tb),当暴露于电离辐射(X射线)时会发荧光。发出的可见光信号穿过传感器光纤,并沿着传输光纤传播,在传输光纤的末端使用荧光光谱仪对其进行远程监控。结果显示出良好的重复性,最大百分比误差为0.5%,并且响应与剂量率无关。

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