Ac-225 Scans: 34 Repeated Phantom Acquisitions

This dataset consists of 34 repeated acquisitions of an Ac-225 cylindrical phantom with three spheres (60mm/28mm/22mm) filled at a 10:1 background. The spheres were initially filled at an activity concentration of 1.37kBq/mL. Imaging parameters were 4.8mmx4.8mm resolution @ 128x128 matrix size, 96 projections, and 60s per projection. There is also an associated CT image taken at the beginning of all acquisitions.