Fig. 9
From: Evaluation of the PETsys TOFPET2 ASIC in multi-channel coincidence experiments
Performance results dependent on the configured delay period. Data are acquired with two KETEK PA3325-WB-0808 in multi-channel coincidence experiments with vth_t1=50. Each SiPM array is coupled to an 8 × 8 LYSO of 12 mm height scintillator array featuring 360 µm BaSO4 powder mixed with epoxy as the inter-crystal layer. A geometry of five NEMA cubes (22Na sources) with a total activity of approximately 3 MBq is employed. a Coincidence resolution time (CRT - FWHM). b Coincidence resolution time (CRT - FWTM). c Gaussian excess factor (gaussex). d Energy resolution (dE/E)