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Figure 10: From left to right column, reconstructed slices of the Shepp-Logan low contrast, ForBild head and Defrise disk phantom, respectively, at . From top row to bottom row, reconstruction with Zhu et al.’s algorithm, EM-1 (CFDKW-1 + FN), and EM-2 (CFDKW-2 + FN), respectively. Display windows are and for Shepp-Logan, ForBild head, and Defrise disk phantom, respectively.