PET前端电子电路滤波器的设计

Filter design of Front-end electronics for PET

摘要: 为了减小PET前端电子电路中信号的噪声干扰,提高信号的信噪比,本文设计了一个二阶无源RC滤波器。用HSPICE、MATLAB对实验数据做了仿真与分析,实验表明该滤波器能够有效地提高信号的信噪比。在此基础之上设计的电子电路可以大幅地降低系统的成本,有助于提高图像重建的质量。

Abstract: In front-end electronics of PET,in order to restrain noise and improve Signal Noise Ratio of sampled data,a passive second order RC filer is designed.We use HSPICE & MATLAB to simulate and analyze the experiment data,and subsequent experiments indicate this filer can improve SNR of signal.Based on this design,the cost of the front-end electronics can be reduced largely,and the quality of images can be improved