Simulation studies of a PET scanner based on BaF/sub 2/ and multi-wire proportional chambers, PETRRA

The PETRRA camera has been simulated using Monte-Carlo techniques including effects associated to the detection process of scintillator crystals coupled to MWPCs (Multi wire proportional chambers). The code has been used for the investigation of the origin of the high scatter observed in experimental PETRRA data, simulation of the SRF (scatter response function) of a centered point source in air and in water, and for possible ways of improving its performance by reducing the SF (scatter fraction) and adding shield for out of FoV (field of view) activity.