| TOF-PET探测器定时性能初步研究 |
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| 引用本文： | 刘军辉,李道武,章志明,廖燕飞,黄先超,王培林,陈研,贠明凯,丰宝桐,帅磊,王宝义,张天保,魏龙.TOF-PET探测器定时性能初步研究[J].原子能科学技术,2011,45(12):1522-1526. |
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| 作者姓名： | 刘军辉 李道武 章志明 廖燕飞 黄先超 王培林 陈研 贠明凯 丰宝桐 帅磊 王宝义 张天保 魏龙 |
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| 作者单位： | 1.中国科学院 ;高能物理研究所 ;核分析技术重点实验室，北京100049；2.北京市射线成像技术与装备工程技术研究中心，北京100049；3.中国科学院 ;研究生院，北京100049 |
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| 基金项目： | 国家自然科学基金资助项目 |
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| 摘 要： | 本工作采用LYSO晶体阵列和平板型位置灵敏光电倍增管H8500对TOF-PET探测器进行了初步设计，能分辨3.2mm×3.2mm的晶体阵列。与BaF2探测器组成时间谱仪，测量正电子湮没射线的瞬发时间谱，得到379ps的符合时间分辨率。根据已测量的BaF2探测器时间分辨率（159ps），可计算得到所设计的TOF-PET探测器时间分辨率为344ps。预计与此相同的两个TOF-PET探测器对正电子湮没射线的符合时间分辨率可达486ps左右，为新型PET的研究提供了有利条件。
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| 关 键 词： | 正电子发射断层扫描仪 飞行时间 硅酸镥 H8500 |
Pilot Study of Timing Performance for Time-of-Flight Positron Emission Tomography Detector |
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| LIU Jun-hui,LI Dao-wu,ZHANG Zhi-ming,LIAO Yan-fei,HUANG Xian-chao,WANG Pei-lin,CHEN Yan,YUN Ming-kai,FENG Bao-tong,SHUAI Lei,WANG Bao-yi,ZHANG Tian-bao,WEI Long.Pilot Study of Timing Performance for Time-of-Flight Positron Emission Tomography Detector[J].Atomic Energy Science and Technology,2011,45(12):1522-1526. |
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| Authors: | LIU Jun-hui LI Dao-wu ZHANG Zhi-ming LIAO Yan-fei HUANG Xian-chao WANG Pei-lin CHEN Yan YUN Ming-kai FENG Bao-tong SHUAI Lei WANG Bao-yi ZHANG Tian-bao WEI Long |
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| Affiliation: | 1.Key Laboratory of Nuclear Analyses Technology, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China;2.Beijing Engineering Research Center of Radiographic Techniques and Equipments, Beijing 100049, China;3.Graduate University of Chinese Academy of Sciences, Beijing 100049, China |
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| Abstract: | In this work, LYSO scintillators and position sensitive photomultiplier tube (PS-PMT) were used to design the TOF-PET detector, and LYSO crystals of 3.2 mm×3.2 mm pitch could be distinguished. The coincidence time resolution of 379 ps was measured for the γ rays produced by positron annihilation with a reference detector of BaF2, whose time resolution for 511 keV γ ray was measured as 159 ps. By subtracting the contribution of the BaF2 detector, 344 ps time resolution could be calculated for the designed TOF-PET detector, and 486 ps coincidence time resolution for γ rays of positron annihilation can be expected for two such detectors. It means that the new detector for TOF-PET is feasible. |
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| Keywords: | positron emission tomography time-of-flight LYSO H8500 |
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