Research on trigger technology of MRPC TOF-PET system and imaging results of $^{22}$Na radioactive source

Jianing Liu; Yuelei Ma; Ziyang Chen; Zhenyan Li; Yi Wang; Baohong Guo; Dong Han; Yuanjing Li

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arXiv · 2502.08243

Research on trigger technology of MRPC TOF-PET system and imaging results of $^{22}$Na radioactive source

Jianing Liu·Yuelei Ma·Ziyang Chen·Zhenyan Li·Yi Wang·Baohong Guo·Dong Han·Yuanjing Li

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Abstract

This study focuses on developing a self-triggered data acquisition system and a noise reduction algorithm for the Multi-gap Resistive Plate Chamber (MRPC) Time-of-Flight Positron Emission Tomography (TOF-PET) system. The system integrates a fast front-end amplifier, a waveform digitization module based on the DRS4 chip, and an efficient noise reduction algorithm to address challenges such as high noise trigger rates and precise gamma-ray detection. The proposed self-triggered system, through threshold discrimination, coincidence logic, and continuous oscillation check, reduces the noise trigger rate to 0.004 Hz. Experimental results show that the system accurately localizes and images the $^{22}$Na radioactive source, and has a good time resolution of 162 ps FWHM for 0.511 MeV gamma rays.

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Jianing Liu, Yuelei Ma, Ziyang Chen, Zhenyan Li, Yi Wang, Baohong Guo, Dong Han, Yuanjing Li. 2025-02-12. Research on trigger technology of MRPC TOF-PET system and imaging results of $^{22}$Na radioactive source. https://arxiv.org/abs/2502.08243

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