Figure 3: A static image of a point source placed on the scanning table. (a) A smaller spot with much lower brightness is visible above and right to the source. As a negative control, when the source is removed from the field of view, no artifact is detected (b). (c) Lateral views of the source obtained with the detector rotation (d) ROI drawn on point sources (e) count density profile. (f) Three-point sources are arranged in a triangular configuration and then imaged