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Images of the Shepp–Logan phantom within slices at (a) x=0 cm, (b) y=0 cm, and (c) z=−2.5 cm reconstructed from noiseless data by use of the proposed FBP algorithm. Display window is [1.0,1.04]. (d) Profile on the vertical line specified by x=0 cm and y=−2.5 cm, which is also indicated in (a). The reconstructed and true profiles are displayed as solid and dotted curves, respectively.
