Fig. 5

Sinogram images on 4-mm (a–e) and 2-mm (f–j) voxel size (tube curve pattern). μ-map sinogram (a, f), changing display scaling of a, f (b, g), mask for TF-SSS algorithm (c, h in blue), random-corrected emission (d, i), and mask superimposed on the emission sinogram (e, j). The urinary catheter was masked in the 4-mm voxel size μ-map sinogram (yellow arrows), but not in the 2-mm voxel size μ-map sinogram (red arrows)