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设计了双层LSO晶体和位置灵敏型光电倍增管耦合构成的用于小动物PET成像的深度编码探测器．众所周知,晶体的不同的表面处理影响着光输出量,进而影响着它们构建的PET探测器的性能．为了优化设计的深度编码探测器的性能,测试了两种不同表面处理的LSO闪烁晶体阵列探测器的晶体分辨能力及其能量、时间和空间分辨率,结果表明,光滑表面LSO晶体构建的深度编码探测器显示出良好的空间、能量及时间分辨特性．
A two-layer LSO crystal and a position-sensitive photomultiplier tube are designed to couple the depth-coded detector for small animal PET imaging. It is well known that the different surface treatments of crystals affect the light output, which in turn affects the performance of the PET detector they are constructed from. In order to optimize the performance of the designed depth-coded detector, the crystal resolution and energy, time and spatial resolution of LSO scintillation crystal array detector with two different surface treatments were tested. The results show that the depth coding The detector shows good spatial, energy and time resolution characteristics.