Positronium lifetime tomography simulation data in SIMPLE-Moment paper

Simulation data for positronium lifetime tomography. A rodent phantom was simulated in GATE with an average activity concentration of 20 kBq (cc)−1 and a scan duration of 30 min. The activity ratio was set to 10:15:2:1 for the lesion, kidneys, liver, and body background to mimic 44Sc-PSMA uptake. The o-Ps lifetime was set to 2.0 ns inside the lesion and 2.5 ns elsewhere. The lifetimes of p-Ps and direct annihilation were set to 0.125 ns and 0.4 ns, respectively, throughout the body, according to an existing study (Moskal et al 2021). The occurrence of Ps was set to 40%. The simulated PET scanner was the Neuro-EXPLORER scanner (Li et al 2024) with a ring diameter of 52 cm, an axial length of 49 cm, and a TOF resolution of 250 ps.