Optimization of Levels of Voltage Thresholds in a Novel J-PET Device
Warsaw Medical Physics Meeting 2015
Nowadays, in Positron Emission Tomography (PET) systems, a Time of Flight (TOF) information is used to improve the image reconstruction process. A novel concept, called J-PET scanner, offers an improvement of TOF resolution due to the use of fast plastic scintillators and dedicated electronics allowing for sampling the signals in the voltage domain [1,2,3]. Owing to Compress Sensing theory, the full waveforms of the signals are recovered . In the presentation we will demonstrate that with fully recovered signals using only four voltage levels, a better position resolution of the J-PET scanner is achieved. Moreover, the provided experiment shows that the result is slightly worse than for original, fully sampled signal.  P. Moskal et al. Nuclear Instr. and Meth. A 764 (2014) 317.  L.Raczynski et al. Nuclear Instr. and Meth. A 764 (2014) 186.  P. Moskal et al. Nuclear Instr. and Meth. A 775 (2015) 54.  L. Raczynski et al. Acta Phys. Pol. B Proc. Supp. 6 (2013) 1121.
25 minutes 12 seconds