Radioactive source localization by a two detector system

The development of instruments utilizing coded apertures has become more feasible with the progress of the Cd(Zn)Te hybrid detector technology. The collective performance of systems comprised by such devices can be evaluated in all the fields where traditionally coded aperture imaging has been applied. Along this direction, we present the evaluation of the performance of a system, which consists of two identical coded aperture gamma cameras. Each detector has an active area of 4.4× 4.4 cm2 with 16384 pixels. The two cameras are used for the estimation of the spatial coordinates of a radioactive source by employing triangulation. The system source location accuracy and efficiency are analyzed using experimental data and simulations.