| 用于高分辨率 PET探测器的LSO闪烁晶体的研究 |
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| 引用本文： | 刘华锋,鲍超,渡边光男,山下贵司.用于高分辨率 PET探测器的LSO闪烁晶体的研究[J].光子学报,2000,29(5):449-453. |
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| 作者姓名： | 刘华锋 鲍超 渡边光男 山下贵司 |
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| 作者单位： | 1. 浙江大学现代光学仪器国家重点实验室,杭州,310027
2. 日本滨松光子学株式会社中央研究所 |
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| 摘 要： | LSO晶体具有密度大光输出量强和衰减时间短的特性使其成为在PET探测器领域的应用潜在的闪烁晶体材料.按照辐射成象系统应用的性能要求我们对LSO晶体的闪烁特性进行了评价.为了获取较高的光输出量,研究和验证了许许多多的晶体表面的状况对光输出量的影响.对于单个LSO晶体和R5900-00-C12位敏管相耦合的系统,钠伽马射线源的511keV的能量峰处的能量分辨率为15%,时间分辨率为0.65ns,最后对三个LSO阵列分别成象验证了其空间分辨本领.
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| 关 键 词： | LSO闪烁晶体 闪烁特性 正电子放射成象装置用探测器 |
| 收稿时间： | 1999-11-11 |
INVESTIGATION OF LSO SCINTILLATORS FOR HIGH-RESOLUTION PET DETECTORS |
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| Liu Huafeng,Bao Chao,Watanabe Mitsuo,Yamashita Takaji.INVESTIGATION OF LSO SCINTILLATORS FOR HIGH-RESOLUTION PET DETECTORS[J].Acta Photonica Sinica,2000,29(5):449-453. |
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| Authors: | Liu Huafeng Bao Chao Watanabe Mitsuo Yamashita Takaji |
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| Institution: | 1. State Key Laboratory of Modern Optical Instrumentation, Zhejiang University, Hangzhou 310027;2. Central Research Laboratory, Hamamatsu Photonics K.K., Japan |
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| Abstract: | The high density,high light output,and short decay time of LSO (lutetiumorthosilicate) make it an attractive scintillator for positron emission tomography (PET) detector applications.The performance of the LSO crystal was evaluated in terms of applicability to radiation imaging systems.A number of surface conditions were considered in order to obtain higher light output.The single LSO crystal coupled to a position sensitive photomultiplier (PS PMT),R5900 00 C12,showed energy resolution of 15% for the 511 keV full energy peak from 22 Na soure.The timing resolution was 0.65ns for the same condition.The spatial resolution capability was demonstrated by imaging three LSO arrays finally. |
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| Keywords: | LSO scintillator Scintillation properties PET detector |
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