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SiPM based detector module and digital data acquisition system for PET: Initial results

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9 Author(s)
Safavi-Naeini, M. ; Centre for Med. Radiat. Phys., Univ. of Wollongong, Wollongong, NSW, Australia ; Franklin, D.R. ; Petasecca, M. ; Lerch, M.L.F.
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A novel detector module configuration based on silicon photomultiplier (SiPM) detectors with LYSO scintillators, a multichannel mixed analog/digital ASIC and an FPGA-based digital data acquisition system has been developed for preclinical positron emission tomography (PET). The SCEPTER ASIC, originally developed for soft X-ray detection at Brookhaven National Laboratory, has a unique architecture incorporating multiple peak detectors and time-to-amplitude converters, and offers an extremely low dead time, making it ideal for coincidence detection. A representative pair of channels in the prototype system has been characterised. Measured energy and timing resolutions are reported for coincidences between a single-pixel SiPM detector and a conventional PMT. A timing resolution of 11.7 ns was achieved during a 48 hour run. Energy resolution for the SiPM device and data acquisition system was found to be 17%.

Published in:

Nuclear Science Symposium Conference Record (NSS/MIC), 2009 IEEE

Date of Conference:

Oct. 24 2009-Nov. 1 2009