Abstract
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.
Highlights
Positron emission tomography imaging technic is one of the tiptop imaging technique in biomedical imaging
We propose a novel front-end readout electronic system with TDC to deal with time information for PET system which can design the timing control
The simulation results show that the proposed system can process slender current from the detector and achieve the energy and time information
Summary
Positron emission tomography imaging technic is one of the tiptop imaging technique in biomedical imaging. PET imaging facilities came through much momentous change in the past thirty years. As the fast development of PET imaging, PET/CT and magnetic resonance imaging (MRI) and 4-D PET imaging research still have been undertaken. The research of PET begins at 1980s, but with the revolutionary change of the technology and methods, the front-end circuit developed with the development of the detector of PET system [3,4]. With the development of CMOS technology, such as decrease of the minimum line width and threedimensional integrated technology, the performance, design method and cost of the front-end specific chip are. This paper discussed a novel front-end readout circuit architecture and design challenges for PET imaging systems, and gave the simulation results for signals flow. The proposed architecture can be applied to high-resolution PET imaging systems with multi-channel ASICs
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