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Image reconstruction for a multi-layer Compton telescope: an analytical model for three interaction events
Physics in Medicine & Biology ( IF 3.5 ) Pub Date : 2020-07-12 , DOI: 10.1088/1361-6560/ab8cd4
J Roser , E Muñoz , L Barrientos , J Barrio , J Bernabéu , M Borja-Lloret , A Etxebeste , G Llosá , A Ros , R Viegas , J F Oliver

Compton Cameras are electronically collimated photon imagers suitable for sub-MeV to few MeV gamma-ray detection. Such features are desirable to enable in vivo range verification in hadron therapy, through the detection of secondary Prompt Gammas. A major concern with this technique is the poor image quality obtained when the incoming gamma-ray energy is unknown. Compton Cameras with more than two detector planes (multi-layer Compton Cameras) have been proposed as a solution, given that these devices incorporate more signal sequences of interactions to the conventional two interaction events. In particular, three interaction events convey more spectral information as they allow inferring directly the incident gamma-ray energy. A three-layer Compton Telescope based on continuous Lanthanum (III) Bromide crystals coupled to Silicon Photomultipliers is being developed at the IRIS group of IFIC-Valencia. In a previous work we proposed a spectral reconstruction algorithm for tw...

中文翻译:

多层康普顿望远镜的图像重建:三个相互作用事件的分析模型

康普顿相机是电子准直的光子成像仪,适用于亚MeV到极少数MeV伽马射线探测。这些特征是希望的,以通过检测次级提示γ来实现强子治疗中的体内范围验证。这项技术的主要问题是,当未知的入射伽马射线能量时,图像质量较差。提出了具有两个以上检测器平面的康普顿相机(多层康普顿相机)作为解决方案,因为这些设备将更多的相互作用信号序列合并到常规的两个相互作用事件中。特别是,三个相互作用事件传递了更多的光谱信息,因为它们可以直接推断入射的伽马射线能量。IFIC-Valencia的IRIS小组正在开发一种三层康普顿望远镜,该望远镜基于与溴化镧(III)连续晶体耦合的硅光电倍增管。在先前的工作中,我们提出了一种频谱重构算法,用于...
更新日期:2020-07-13
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