publication . Article . Conference object . 2011

PET System Synchronization and Timing Resolution Using High-Speed Data Links

Ramón J. Aliaga; José Monzó; Michele Spaggiari; Néstor Ferrando; R. Gadea; R.J. Colom;
Open Access
  • Published: 01 Aug 2011 Journal: IEEE Transactions on Nuclear Science, volume 58, pages 1,596-1,605 (issn: 0018-9499, Copyright policy)
  • Publisher: Institute of Electrical and Electronics Engineers (IEEE)
  • Country: Spain
Abstract
Current PET systems with fully digital trigger rely on early digitization of detector signals and the use of digital processors, usually FPGAs, for recognition of valid gamma events on single detectors. Timestamps are assigned and later used for coincidence analysis. Good timing resolution is important, allowing better rejection of singles and leading to increased reconstructed image quality. In order to maintain a decent timing resolution for events detected on different acquisition boards, it is necessary that local timestamps on different FPGAs be synchronized. Sub-nanosecond accuracy is mandatory if we want this effect to be negligible on overall timing reso...
Subjects
free text keywords: Nuclear and High Energy Physics, Electrical and Electronic Engineering, Nuclear Energy and Engineering, Data acquisition (DAQ), Positron emission tomography (PET), Serial links, Timing resolution, Backplanes, Coincidence analysis, Detector signals, Digital processors, High-speed data, Scalability problems, System synchronization, Time stamps, Timing resolutions, Positron emission tomography, TECNOLOGIA ELECTRONICA, Computer hardware, business.industry, business, Data acquisition, Synchronization, Backplane, Electronic engineering, Clock synchronization, Clock domain crossing, Latency (engineering), Digital clock manager, Timestamp, Engineering
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