Nuclear Engineering and Technology

  • 제53권10호
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  • Pages.3406-3412
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  • 2021
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  • 1738-5733(pISSN)
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  • 2234-358X(eISSN)
한국원자력학회 (Korean Nuclear Society)
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A real-time sorting algorithm for in-beam PET of heavy-ion cancer therapy device

  • Ke, Lingyun (Institute of Modern Physics, Chinese Academy of Sciences) ;
  • Yan, Junwei (Institute of Modern Physics, Chinese Academy of Sciences) ;
  • Chen, Jinda (Institute of Modern Physics, Chinese Academy of Sciences) ;
  • Wang, Changxin (Institute of Modern Physics, Chinese Academy of Sciences) ;
  • Zhang, Xiuling (Institute of Modern Physics, Chinese Academy of Sciences) ;
  • Du, Chengming (School of Electronic Engineering, Chaohu University) ;
  • Hu, Minchi (Institute of Modern Physics, Chinese Academy of Sciences) ;
  • Yang, Zuoqiao (Institute of Modern Physics, Chinese Academy of Sciences) ;
  • Xu, Jiapeng (Institute of Modern Physics, Chinese Academy of Sciences) ;
  • Qian, Yi (Institute of Modern Physics, Chinese Academy of Sciences) ;
  • She, Qianshun (Institute of Modern Physics, Chinese Academy of Sciences) ;
  • Yang, Haibo (Institute of Modern Physics, Chinese Academy of Sciences) ;
  • Zhao, Hongyun (Institute of Modern Physics, Chinese Academy of Sciences) ;
  • Pu, Tianlei (Institute of Modern Physics, Chinese Academy of Sciences) ;
  • Pei, Changxu (Institute of Modern Physics, Chinese Academy of Sciences) ;
  • Su, Hong (Institute of Modern Physics, Chinese Academy of Sciences) ;
  • Kong, Jie (Institute of Modern Physics, Chinese Academy of Sciences)
  • 투고 : 2020.09.14
  • 심사 : 2021.04.06
  • 발행 : 2021.10.25
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초록

A real-time digital time-stamp sorting algorithm used in the In-Beam positron emission tomography (In-Beam PET) is presented. The algorithm is operated in the field programmable gate array (FPGA) and a small amount of registers, MUX and memory cells are used. It is developed for sorting the data of annihilation event from front-end circuits, so as to identify the coincidence events efficiently in a large amount of data. In the In-Beam PET, each annihilation event is detected by the detector array and digitized by the analog to digital converter (ADC) in Data Acquisition Unit (DAQU), with a resolution of 14 bits and sampling rate of 50 MS/s. Test and preliminary operation have been implemented, it can perform a sorting operation under the event count rate up to 1 MHz per channel, and support four channels in total, count rate up to 4 MHz. The performance of this algorithm has been verified by pulse generator and 22Na radiation source, which can sort the events with chaotic order into chronological order completely. The application of this algorithm provides not only an efficient solution for selection of coincidence events, but also a design of electronic circuit with a small-scale structure.

키워드

과제정보

This work was supported in part by the National Natural Science Foundation of China (No. 11775285 and 11975293), the Science and Technology Research Foundation of Gansu Province (NO. 20JR10RA066), the Youth Innovation Promotion Association, CAS (No. 2019408), the Key Deployment Project of Chinese Academy of Sciences (Grant No. KFZD-SW-222) and Fujian Institute of Innovation, CAS(FJCXY18040201).

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