Industrial gamma-ray computed tomography utilizing rod plastic scintillators

Abstract

In this work, an industrial gamma-ray-based computed tomography system is constructed using a 50 cm rod plastic scintillator coupled to PMTs at both ends. The ability of the system is evaluated using two phantoms: one for contrast and one for spatial resolution. Different cross-sectional images are reconstructed for the phantoms using MLEM algorithm to extract evaluation parameters. Such a system is suitable for scanning large objects due to its spatial resolution limitation, which is about 1 cm.