Progress towards a semiconductor Compton camera for prompt gamma imaging during proton beam therapy for range and dose verification
Progress towards a semiconductor Compton camera for prompt gamma imaging during proton beam therapy for range and dose verification
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DOI：
10.1088/1748-0221/13/01/c01036
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发表时间：
2018-01-01
影响因子：
1.3
通讯作者：
Boston, A. J.
中科院分区：
文献类型：
--
作者：
Gutierrez, A.;Baker, C.;Boston, A. J.
这项工作的主要目标是测试一种新的半导体康普顿相机的即时伽马成像。我们的设备是由三个有源层：一个Si（Li）探测器作为散射体和两个高纯度锗探测器作为高能量伽马射线的吸收剂。我们使用Geant4工具包进行Monte Carlo模拟，以确定质子束治疗期间的预期伽马场，并使用60 MeV被动散射束照射体模对伽马谱进行了实验测量。在这个过程中，我们描述了康普顿相机的状态，并提出了第一个初步测量放射源和相应的重建图像。
The main objective of this work is to test a new semiconductor Compton camera for prompt gamma imaging. Our device is composed of three active layers: a Si(Li) detector as a scatterer and two high purity Germanium detectors as absorbers of high-energy gamma rays. We performed Monte Carlo simulations using the Geant4 toolkit to characterise the expected gamma field during proton beam therapy and have made experimental measurements of the gamma spectrum with a 60 MeV passive scattering beam irradiating a phantom. In this proceeding, we describe the status of the Compton camera and present the first preliminary measurements with radioactive sources and their corresponding reconstructed images.