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An Iterative Reconstruction from Truncated Projection Data

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2 Author(s)
Katsulai, Hiroshi ; Dept. of Radiology, Faculty of Medical Sciences Chiba University, Chiba 280, Japan ; Arimizu, Noboru

Various methods have been proposed for tomographic reconstruction from truncated projection data. In this paper, a reconstructive method is discussed which consists of iterations of filtered back-projection, reprojection and some nonlinear processings. First, the method is so constructed that it converges to a fixed point. Then, to examine its effectiveness, comparisons are made by computer experiments with two existing reconstructive methods for truncated projection data, that is, the method of extrapolation based on the smooth assumption followed by filtered back-projection, and modified additive ART.

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Nuclear Science, IEEE Transactions on  (Volume:32 ,  Issue: 3 )