Measured and simulated specifications of Lausanne ClearPET scanner demonstrator
Measured and simulated specifications of Lausanne ClearPET scanner demonstrator
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Lausanne ClearPET 扫描仪演示器的测量和模拟规格
DOI：
10.1109/nssmic.2005.1596741
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发表时间：
2005
期刊：
影响因子：
--
通讯作者：
C. Morel
中科院分区：
文献类型：
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作者：
M. Rey;J. Vieira;J. Mosset;M. Moulin Sallanon;P. Millet;J. Loude;C. Morel
本文介绍了部分环形洛桑ClearPET扫描仪演示器的测量结果，并将其与GATE蒙特卡罗模拟结果进行了比较。径向和切向空间分辨率测量至4厘米，从扫描仪轴。FWHM空间分辨率范围从轴上的1.3 mm到距轴4cm处的2.6 mm。观测到的空间分辨率与模拟的空间分辨率非常吻合。LSO/LuYAP探测器模块的符合时间分辨率达到4.8 ns FWHM。两个相互面对的检测器模块的绝对灵敏度测量值为0.068%，而在含70%镥原子分数的7.1 g/cc LuYAP中模拟的绝对灵敏度为0.070%。模拟每环20个LSO/LuYAP检测器模块的4环ClearPET扫描仪的绝对灵敏度为4.42%。DOI效应显示在一个迷你德伦佐幻影的重建图像。[18F]FDG大鼠脑部扫描图
This paper presents the measurements obtained with the partial ring Lausanne ClearPET scanner demonstrator and compares them against GATE Monte Carlo simulations. Radial and tangential spatial resolutions were measured up to 4 cm from the scanner axis. FWHM spatial resolutions range from 1.3 mm on axis to 2.6 mm at 4 cm from the axis. Excellent agreement is observed between the measured and simulated spatial resolutions. Coincidence time resolution of the LSO/LuYAP detector modules amounts to 4.8 ns FWHM. Absolute sensitivity measured for two detector modules facing each other amounts to 0.068%, compared to 0.070% simulated for 7.1 g/cc LuYAP with 70% lutetium atomic fraction. Simulation of a 4-ring ClearPET scanner with 20 LSO/LuYAP detector modules per ring gives an absolute sensitivity of 4.42%. DOI effect is shown on a reconstructed image of a Mini-Derenzo phantom. Images of a [ 18F]FDG rat brain scan are presented