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Transversal low dose CT (A), PET (G-K) and fused PET/CT images (B-F) of a PCa patient. The PET images were reconstructed with 2 min per bed position using OSEM (3 iterations/16 subsets, and a 5-mm gaussian postprocessing filter) and BSREM with β-values 300, 600, 900 and 1200. BSREM: block-sequential regularized expectation maximization; OSEM: ordered subsets expectation maximization.
