Development of an FPGA-based data acquisition module for small animal PET

J. Imrek, D. Novák, Gy Hegyesi, G. Kalinka, J. Molnár, J. Végh, L. Balkay, M. Emri, G. Molnár, L. Trón, I. Bagaméry, T. Bükki, S. Rózsa, Zs Szabó, A. Kerek

Research output: Contribution to journalArticle

29 Citations (Scopus)

Abstract

We report on the design of a data acquisition (DAQ) module for a small animal PET camera developed at our institutes. During the design an important guideline was to develop a system which is built up from strictly identical DAQ modules, and which has no built-in hardware limitation on the maximum number of modules. The developed DAQ module comprises of an LSO scintillator crystal block, a position sensitive PMT, analog signal conditioning circuits, a digitizer, an field programmable gate array (FPGA) for digital signal processing, and a communication module through which the collected data are sent to a cluster of computers for postprocessing and storage. Instead of implementing hardware coincidence detection between the modules, we attach a precise time stamp to each event in our design, and the coincidence is determined by the data collecting computers during postprocessing. The digital CFD algorithm implemented in the FPGA gives a time resolution of 2 ns FWHM for real detector signals.

Original languageEnglish
Article number1710258
Pages (from-to)2698-2703
Number of pages6
JournalIEEE Transactions on Nuclear Science
Volume53
Issue number5
DOIs
Publication statusPublished - Oct 1 2006

Keywords

  • Data acquisition (DAQ)
  • Digital CFD
  • Ethernet
  • PET
  • Small animal

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Nuclear Energy and Engineering
  • Electrical and Electronic Engineering

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