Test of an amorphous silicon detector in medical proton beams
Test of an amorphous silicon detector in medical proton beams
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DOI：
10.1016/j.nima.2010.06.182
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发表时间：
2011-05-01
影响因子：
1.4
通讯作者：
Jaekel, O.
中科院分区：
文献类型：
--
作者：
Martisikova, M.;Hesse, B. M.;Jaekel, O.
与使用高能光子的标准放射治疗相比，用于癌症治疗的离子束放射治疗可以改善对靶标的剂量限制。在未来几年中，将越来越多地使用聚焦离子束扫描目标体积来向患者输送剂量。以这种方式实现的剂量输送的高精度必须通过在二维上具有足够空间分辨率的射束监测的实用方法来满足。用于在最新的医用直线加速器上进行光子射野成像的平板探测器是实现此目的的一个有趣的候选者。这里介绍的初始探测器测试是使用具有最高可用能量的质子束进行的。研究包括测量不同光束强度和不同光束宽度下的光束轮廓以及信号线性度。还对辐射损伤进行了调查。获得的结果表明该探测器是用于治疗质子束的有希望的候选者。 (C) 2010 Elsevier B.V. 保留所有权利。
Ion beam radiation therapy for cancer treatment allows for improved dose confinement to the target in comparison with the standard radiation therapy using high energy photons. Dose delivery to the patient using focused ion beam scanning over the target volume is going to be increasingly used in the upcoming years. The high precision of the dose delivery achieved in this way has to be met by practical methods for beam monitoring with sufficient spatial resolution in two dimensions. Flat panel detectors, used for photon portal imaging at the newest medical linear accelerators, are an interesting candidate for this purpose. Initial detector tests presented here were performed using proton beams with the highest available energy. The investigations include measurements of beam profiles at different beam intensities and for different beam width, as well as the signal linearity. Radiation damage was also investigated. The obtained results show that the detector is a promising candidate to be used in the therapeutic proton beams. (C) 2010 Elsevier B.V. All rights reserved.