Time of flight measurements based on FPGA and SiPMs for PET MR

Aguilar, AlbertGarcia-Olcina, RaimundoMartinez, Pedro A.Martos, JulioSoret, JesúsTorres-Pais, JoseBenlloch Baviera, Jose MaríaGonzález Martínez, Antonio JavierF Sánchez2017-04-052017-04-052014-01-110168-9002https://riunet.upv.es/handle/10251/79497Coincidence time measurements with SiPMs have shown to be suitable for PET/MR systems. The present study is based on 3 x 3 mm(2) 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. (C) 2013 Elsevier By, All rights reserved,Reserva de todos los derechosTime of flightSilicon photomultipliersTime-to-digital converterField Programable Gate ArrayPositron emission tomography and magnetic resonanceTime of flight measurements based on FPGA and SiPMs for PET MRArtículo10.1016/j.nima.2013.09.008Cerrado