保持各个光电倍增管的增益一致性对正电子发射断层成像（PET）的质量至为重要。
To make all PMTs' gains identical through auto-adjustment is important for ensuring the PET imaging quality.
介绍了位置灵敏光电倍增管的内部结构、成像方法和电路，分析了用位置灵敏光电倍增管和闪烁晶体组成的数据采集电路及微机接口的设计。
This paper introduces the internal structure, imaging method and circuit of PSPMT , analyses the circuit of data acquisition with PSPMT and NaI(Tl) and the design of microcomputer interface.
简要介绍了雪崩光电二极管(APD)阵列光子计数成像原理，建立了基于泊松点过程的APD阵列的单光子响应模型。
A photon counting image model based on avalanche photodiode (APD) arrays response characters and Poisson point process of photons was developed.
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