Investigation of a whole-body DOI-PET system
Investigation of a whole-body DOI-PET system
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DOI：
10.1016/j.nima.2006.10.068
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发表时间：
2007-02
影响因子：
1.4
通讯作者：
J. Ohi;H. Tonami
中科院分区：
文献类型：
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作者：
J. Ohi;H. Tonami
在这项研究中，我们正在进行全身深度伽马射线相互作用（DOI）正电子发射断层扫描系统的基础研究，该系统可提供高且均匀的空间分辨率，并最大限度地降低成本。探测器由双层 9×10GSO/GSO 磷光晶体块、光导和两个矩形 PMT 组成。单个晶体尺寸为2.45×5.1×15mm3，每层晶体块的衰减时间不同。我们当前的传统 PET 系统（SET-3000G SHIMADZU Japan）中使用的许多电路板都针对 DOI 采集进行了优化。探测器排列形成半径为332.5mm的探测环，在250mm半径视场的中心到边缘获得空间分辨率。通过与非 DOI 系统的比较，确认了 DOI 的效果。
In this study, we were conducting basic research on a whole-body depth of gamma-ray interaction (DOI) positron emission tomography system which provides spatial resolution that is both high and uniform, and also minimizes costs. The detectors consist of double-layer 9×10GSO/GSO phoswich crystal blocks, a light guide and two rectangular PMTs. Individual crystal sizes are 2.45×5.1×15mm3, and each layer of crystal blocks has a different decay time. Many of the circuit boards used in our current conventional PET system (SET-3000G SHIMADZU Japan) have been optimized for DOI acquisition. The detectors are arranged to form a 332.5mm radius detection ring, and spatial resolution is obtained from the center to the edge of the 250mm radius field of view. The effect of DOI was confirmed using a comparison with the non-DOI systems.