The ClearPETâ„¢ project:: development of a 2nd generation high-performance small animal PET scanner
The ClearPETâ„¢ project:: development of a 2nd generation high-performance small animal PET scanner
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DOI：
10.1016/j.nima.2004.08.032
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发表时间：
2005-01-21
影响因子：
1.4
通讯作者：
Vieira, JM
中科院分区：
文献类型：
--
作者：
Ziemons, K;Auffray, E;Vieira, JM
第二代高性能PET扫描仪，称为ClearPET（TM）（1），由Crystal Clear Collaboration（CCC）的工作组开发。高灵敏度和喜。ClearPET相机的空间分辨率是通过使用组合两种不同类型的基于镥的闪烁体材料的phoswich布置来实现的：CTI的LSO和CCC（ISTC项目）的LuYAP：Ce。在第一个ClearPET原型中，2 x 2 x 10 mm（3）的8 x 8晶体的phoswich排列耦合到多通道光电倍增管（Hamamatsu R7600）。一个单元的四个光电倍增管排列成直线代表一个20部门的环设计。环的开口直径为120 mm，轴向探测器长度为110 mm。PMT脉冲由自由运行的ADC数字化，数字数据处理确定伽马能量、phoswich层甚至精确的脉冲开始时间。其随后用于重合检测。机架允许探测器模块围绕视场旋转。
Second generation high-performance PET scanners, called ClearPET(TM)(1), have been developed by working groups of the Crystal Clear Collaboration (CCC). High sensitivity and hi.-h spatial resolution for the ClearPET camera is achieved by using a phoswich arrangement combining two different types of lutetium-based scintillator materials: LSO from CTI and LuYAP:Ce from the CCC (ISTC project). In a first ClearPET prototype, phoswich arrangements of 8 x 8 crystals of 2 x 2 x 10 mm(3) are coupled to multi-channel photomultiplier tubes (Hamamatsu R7600). A unit of four PMTs arranged in-line represents one of 20 sectors of the ring design. The opening diameter of the ring is 120 mm, the axial detector length is 110 mm. The PMT pulses are digitized by free-running ADCs and digital data processing determines the gamma energy, the phoswich layer and even the exact pulse starting time. which is subsequently used for coincidence detection. The gantry allows rotation of the detector modules around the field of view.