Architecture of the Front-End Readout ASIC for 4-D PET Imaging

Front-end electronic system for PET imaging is a complex analog-digital mixed signal processing system, including detector/sensor, front-end readout electronic chain and digital signal processor, and so on. This paper discussed the necessity, basic circuit architecture, design flow and design challenges of front-end readout ASIC for 4-D biomedical imaging applications. The design trend of this kind of circuits is given in this paper, for which the further researches would head to the mixed-signal ASIC realization of front-end readout system and DSP for appropriative imaging.