53 Repeated Acquisitions of a Lu-177 NEMA Phantom

This dataset consists of 53 repeated acquisitions of an Lu-177 NEMA phantom with six spheres (37mm, 28mm, 22mm, 17mm, 13mm, 10mm) filled at a 10:1 background. The spheres were initially filled at an activity concentration of 0.89MBq/mL. Imaging parameters were 4.8mmx4.8mm resolution @ 128x128 matrix size, 96 projections, and 15s per projection. There is also an associated CT image taken at the beginning of all acquisitions.