Respiration Gating Simulated by Voxelised Phantom in 3D PET Imaging

Respiratory motion may result in image degradation in PET imaging. A number of gating techniques can be used to compensate for respiratory motion. In this paper, a gating approach utilizing the geometric sensitivity feature of a 3D-PET scanner was presented by only the use of line of response (LOR) events. No additional hardware device systems and additional patient preparation are required. Simulation result demonstrates that the geometric sensitivity gating method is able to compensate respiratory motion.