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基于NEMA NU 2-2007标准测试国产uEXPLORER PET系统性能 被引量:1
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作者 蒋梨 黄衍超 +4 位作者 李洪生 韩彦江 王巧愚 王静怡 王全师 《中国医学影像技术》 CSCD 北大核心 2021年第11期1725-1730,共6页
目的测试并验证国产uEXPLORER PET系统的物理性能及临床应用性能。方法基于美国国家电器制造协会(NEMA)NEMA NU 2-2007标准测试、分析及评估国产uEXPLORER PET系统的空间分辨率、探测灵敏度、散射分数及噪声等效计数率,并对4名志愿者行... 目的测试并验证国产uEXPLORER PET系统的物理性能及临床应用性能。方法基于美国国家电器制造协会(NEMA)NEMA NU 2-2007标准测试、分析及评估国产uEXPLORER PET系统的空间分辨率、探测灵敏度、散射分数及噪声等效计数率,并对4名志愿者行全身PET/CT扫描。结果系统在偏离视野(FOV)中心1 cm处的横向和轴向空间分辨率分别为2.93 mm和2.93 mm,偏离FOV中心10 cm处分别为3.09 mm和3.22 mm;在FOV中心与偏离轴向10 cm处的灵敏度分别为178.000 kcps/MBq与184.477 kcps/MBq;放射源活度为18.7 kBq/cc时,等效噪声计数率取得峰值为1548.95 kcps,对应的散射分数为37.2%。初步临床应用结果表明,利用该系统可减少注射药物剂量,并明显缩短扫描时间。结论国产uEXPLORER PET系统具有较高的空间分辨率、系统灵敏度,具备一定临床应用价值。 展开更多
关键词 正电子发射断层显像 国产 性能 uexplorer NEMA标准
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An atlas of glucose uptake across the entire human body as measured by the total-body PET/CT scanner:a pilot study
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作者 Weizhao Lu Zhaoping Cheng +6 位作者 Xue Xie Kun Li Yanhua Duan Min Li Chao Ma Sijin Liu Jianfeng Qiu 《Life Metabolism》 2022年第2期190-199,共10页
Glucose uptake differs in organs and tissues across the human body.To date,however,there has been no single atlas providing detailed glucose uptake profiles across the entire human body.Therefore,we aimed to generate ... Glucose uptake differs in organs and tissues across the human body.To date,however,there has been no single atlas providing detailed glucose uptake profiles across the entire human body.Therefore,we aimed to generate a detailed profile of glucose uptake across the entire human body using the uEXPLORER positron emission tomography/computed tomography scanner,which offers the opportunity to collect glucose metabolic imaging quickly and simultaneously in all sites of the body.The standardized uptake value normalized by lean body mass(SUL)of 18F-fluorodeoxyglucose was used as a measure of glucose uptake.We developed a fingerprint of glucose uptake reflecting the mean SULs of major organs and parts across the entire human body in 15 healthy-weight and 18 overweight subjects.Using the segmentation of organs and body parts from the atlas,we uncovered the significant impacts of age,sex,and obesity on glucose uptake in organs and parts across the entire body.A difference was recognized between the right and left side of the body.Overall,we generated a total-body glucose uptake atlas that could be used as the reference for the diagnosis and evaluation of disordered states involving dysregulated glucose metabolism. 展开更多
关键词 glucose uptake PET/CT glucose uptake atlas uexplorer
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