Clemêncio, Filomena M. C.Loureiro, Custódio F. M.Correia, Carlos M. B. A.2023-04-052023-04-052007F. M. C. Clemencio, C. F. M. Loureiro and C. M. B. A. Correia, The design of a digital coincidence-detection trigger system for a RPC-based pet, 2007 IEEE Nuclear Science Symposium Conference Record, Honolulu, HI, USA, 2007, pp. 827-830, doi: 10.1109/NSSMIC.2007.4436456.1082-3654http://hdl.handle.net/10400.22/22679A complex task for PET cameras is the design of an appropriate coincidence-detection trigger as it usually encompasses coincidences in a large number of channels and tight time specifications. Those requirements are even greater for a resistive plate chamber (RPC)-based detector technology as the time window specification is quite small (in the order of a few hundred picoseconds) and the number of coincidence-channels can be quite large (more than 100 in a large camera). In this work we discuss on-going work aimed at implementing the coincidence-detection algorithm inside a FPGA along with the necessary TDCs. The use of the developed solution in a first prototype of an RPC-based small animal PET and its scalability to the case of a human, all-body, PET, is discussed.engPET camerasDigital coincidence-detection trigger systemTDCsTime-to-digital convertersRPC-based small animal PETResistive plate chamberHuman scalabilityFPGAField programmable gate arrayPositron emission tomographyconference object10.1109/NSSMIC.2007.4436456