Fig. 8From: Implementation of cylindrical PET scanners with block detector geometry in STIRImages of the Derenzo phantom simulated inside the Scanner B reconstructed using OSEM algorithm with six subsets and 24 subiterations. a Cylindrical geometry without normalization, b block geometry without normalization, c cylindrical geometry with normalization, and d block geometry with normalization. A circular artifact is observed in images a and c. Values on image b show the sphere diameters in millimeterBack to article page