FDK-Type Algorithms with No Backprojection Weight for Circular and Helical Scan CT

Figure 7

From left to right column, reconstructed slices of Shepp-Logan low contrast, ForBild head and Defrise disk phantom, respectively, at 𝑥=0. From top row to bottom row, reconstruction with FDK algorithm, Hu’s algorithm, T-FDK algorithm, CFDKW-1, and CFDKW-2 respectively. Display windows are [0.981.05],[1.011.09] and [0.50.7] for Shepp-Logan, ForBild head and Defrise disk phantom, respectively.

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