Scatter Fraction of the J-PET Tomography Scanner

Abstract

A novel Positron Emission Tomography system, based on plastic scintillators,\nis being developed by the J-PET collaboration. In this article we present the\nsimulation results of the scatter fraction, representing one of the parameters\ncrucial for background studies defined in the NEMA-NU-2-2012 norm. We elaborate\nan event selection methods allowing to suppress events in which gamma quanta\nwere scattered in the phantom or underwent the multiple scattering in the\ndetector. The estimated scatter fraction for the single-layer J-PET scanner\nvaries from 37% to 53% depending on the applied energy threshold.\n