The readout electronics for the continuous crystal PET detector module

Compared with PET detectors basing on the traditional split crystals, PET detectors basing on continuous crystals having a simple structure, high energy resolution and the detector efficiency is high, as well as low cost, etc.. The biggest difficulty of the continuous crystal PET detector is using the probe to get the blinking light distribution to calculate the interaction point of the γ-photon by the interaction point position algorithm. The detector module electronics needs to read out and obtain the distribution of the scintillation light, and thus reading out and data acquisition electronics becomes relatively complex. In this paper, we create our own PET detector basing on continuous LYSO crystals and neural network positioning algorithm module, design and realize 64 channel data acquisition and readout electronics system. The system uses eight 8-channel, 50Mbps, 12bit ADC for each channel to digitize from the massive nuclear instances for selecting effective examples of nuclear data and package within the FPGA timing in line, baseline restoration and other functions. After the test, the circuit for each channel has low-noise, gain consistency and compact structure, excellent performance of the entire electronics system, based on the continuous crystal PET detectors, experimental and applied research. (authors)