Fig. 7
From: Implementation of cylindrical PET scanners with block detector geometry in STIR
FWHM measurements for the point simulated inside the Scanner B reconstructed using OSEM algorithm with six subsets and 24 subiterations. The point source is axially at two different positions: the center of the scanner and one-fourth of the axial FOV. For both cases, it moves radially till 25 mm with steps of 5 mm. The FWHM values are plotted for three axial, tangential and radial directions for the block and cylindrical models