Title of article
Time of flight measurements based on FPGA and SiPMs for PET–MR
Author/Authors
Aguilar، نويسنده , , Albert and Garcيa-Olcina، نويسنده , , Raimundo and Martيnez، نويسنده , , Pedro A. and Martos، نويسنده , , Julio and Soret، نويسنده , , Jesْs and Torres، نويسنده , , José and Benlloch، نويسنده , , José M. and Gonzلlez، نويسنده , , Antonio J. and Sلnchez، نويسنده , , Filomeno، نويسنده ,
Pages
5
From page
127
To page
131
Abstract
Coincidence time measurements with SiPMs have shown to be suitable for PET/MR systems. The present study is based on 3×3 mm2 SiPMs, LSO crystals and a conditioning signal electronic circuit. A Constant Fraction Discriminator (CFD) is used to digitalize the signals and a TDC FPGA-implemented is employed for fine time measurements. TDC capability allows processing the arrival of multiple events simultaneously, measuring times under 100 ps. The complete set-up for time measurements results on a resolution of 892±41 ps for a pair of detectors. The details of such implementation are exposed and the trade-offs of each configuration are discussed.
Keywords
Time of flight , Silicon photomultipliers , time-to-digital converter , Positron emission tomography and magnetic resonance , Field programable gate array
Journal title
Astroparticle Physics
Record number
2010755
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