Fig. 1From: Quantitative validation of Monte Carlo SPECT simulation: application to a Mediso AnyScan GATE simulationTop: A photograph of the SPECT system in dual head configuration. The third head (left) is not used to acquire data in this mode. Bottom: A visualisation of the simulation geometry with key components labelled. Each detector head is surrounded by lead shielding; this is shown as a wire frame here but fully encases each headBack to article page