PET设备中探测器的研发，一直是很活跃且具有高创新性的领域。提高现有基于闪烁晶体探测器的性能，研究适用于多模式成像设备（PET／CT和PET／MRI）的新型探测器，满足TOF和DOI技术的需求并促进其发展应用，构成PET探测器的几个主要研究方向。介绍了PET探测器在闪烁晶体、光电探测器和半导体探测器等方面的最新进展，指出未来最有潜力的探测器设计方案。关键词：正电子发射断层成像；辐射探测器；多模态成像；闪烁晶体；半导体探测器
The research on PET detector is a very active and highly innovative field. The main research in- terests of PET detector include improving performances of scintillation crystal detectors, investigating new detectors being suitable for multimodality imaging （e. g., PET/CT and PET/MRI）, meeting needs of TOF and DOI technologies in order to promote their development and application. In this paper, new de- velopments in PET detector technology about scintillation crystal, photodetector and semiconductor detec- tor are introduced and the most potential detector design scheme in the future is brought forward.
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