Simulation of a PET system and study of some geometry parameters

摘要

The Monte Carlo simulation of small animal conventional positron emission tomography(PET) is an important tool for geometry parameters optimization, image reconstruction algorithmtests, performance of different radioisotopic sources and some others. The present work deals withthe Monte Carlo study of a small cylindrical PET system in the framework of the GEANT4 code.Two different accepted ring width values and spherical sources of ~(18)Fand ~(44)Scisotopes wereconsidered. Then, the improvement of the detection efficiency and spatial resolution was analyzedin all the cases.