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- W2023749508 abstract "Proposed is a theoretically exact formula for inversion of data obtained by a spiral computed tomography (CT) scan with a two-dimensional detector array. The detector array is supposed to be of limited extent in the axial direction. The main property of the formula is that it can be implemented in a truly filtered backprojection fashion. First, one performs shift-invariant filtering of a derivative of the cone beam projections, and, second, the result is backprojected in order to form an image. Another property is that the formula solves the so-called long object problem. Limitations of the algorithm are discussed. Results of numerical experiments are presented." @default.
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- W2023749508 date "2002-01-01" @default.
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- W2023749508 title "Theoretically Exact Filtered Backprojection-Type Inversion Algorithm for Spiral CT" @default.
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- W2023749508 doi "https://doi.org/10.1137/s0036139901387186" @default.
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