Design of a Novel Front-End Readout ASIC for PET Imaging System

• 作者: Huiming Zeng Linkai Shen Tingcun Wei Wu Gao
• 来源期刊: 信号与信息处理(英文)
• 学科: 医学
• 关键词: PET FRONT-END READOUT ELECTRONICS TDC POSITRON Emission TOMOGRAPHY Imaging
• 年，卷（期）: 2013,（2）
• 页码范围: 129-133
• 页数: 5页
• 分类号: R73

摘要

The architecture of a multi-channel front-end system is important for realizing a high-resolution PET system. We propose a novel front-end readout electronic system with TDC to deal with time information for PET system which can easily design the timing control. Each channel consists of a charge preamplifier, slow/fast shaper, discriminator and an analog memory. There are an ADC and a TDC to process the energy information and time information for each channel at the same time. In this paper, the whole system signals flow is all simulated by MATLAB. The simulation results show that the proposed system can process slender current from the detector and achieve the energy and time information. The proposed architecture can be applied to high-resolution PET imaging systems with multi-channel ASICs.