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首页> 外文期刊>Journal of Nuclear Physics, Material Sciences, Radiation and Applications >Analysis and characterization of neutron scattering of a Linear Accelerator (LINAC) on medical applications.
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Analysis and characterization of neutron scattering of a Linear Accelerator (LINAC) on medical applications.

机译：在医疗应用中线性加速器（LINAC）的中子散射的分析和表征。

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In several theoretical and experimental studies, the topic of the undesirable generation of photoneutrons in rooms where a linear accelerator (LINAC) operates has been discussed. When energies above 10 MeV are used to produce X-rays and give radiotherapy treatment to patients resulting in additional radiation to patients. Accordingly, an analysis and characterization of the neutron scattering distribution on different zones in a treatment room contributes to evaluate the radiological health risk to patients, technical and other workers involved in treatment. For the evaluation, a device developed at the PAD-IFUNAM formed by a CR-39 detector enclosed by two 3mm thick acrylic plates was employed. To avoid environmental contamination, the CR-39 and the acrylics plates are enclosed in a round plastic box. Sixteen of these devices were settled in different places inside the treatment room, where a linear accelerator is used. The results show a significant concentration of neutron scattering in areas near the head of irradiation. The recommendation will be to evaluate the neutron scattering concentration in all rooms that’s operates a LINAC in order to verify the radiological health risk and to mitigate the neutron scattering when concentration levels are to high like those in our case, in order to avoid unnecessary exposition to patients and personnel in general.
机译：在一些理论和实验研究中，讨论了在线性加速器（LINAC）运行的房间中不希望产生光中子的话题。当使用高于10 MeV的能量产生X射线并对患者进行放射治疗时，会给患者带来额外的辐射。因此，对治疗室中不同区域中子散射分布的分析和表征有助于评估治疗中涉及的患者，技术人员和其他工人的放射线健康风险。为了进行评估，使用了在由两块3mm厚的丙烯酸板包围的CR-39检测器形成的PAD-IFUNAM上开发的设备。为避免环境污染，CR-39和丙烯酸板被封装在圆形塑料盒中。这些设备中有十六个安装在使用线性加速器的治疗室内的不同位置。结果表明，在照射头附近区域中子散射的浓度很高。建议是评估运行LINAC的所有房间中的中子散射浓度，以便验证放射线健康风险，并在浓度水平较高（如我们的情况）时减轻中子散射，以避免不必要的暴露。患者和人员一般。

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