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

Huiming Zeng, Tingcun Wei, Linkai Shen, Wu Gao

School of Computer Science and Technology, Northwestern Polytechnical University, Xi’an, China.

DOI: 10.4236/jsip.2013.42018                

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.

Keywords

PET; Front-End Readout Electronics; TDC; Positron Emission Tomography Imaging

Conflicts of Interest

The authors declare no conflicts of interest.

References

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