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- W1561512957 abstract "We propose a new fast Feldkamp algorithm for 3-D cone beam tomography with a circular source trajectory. The algorithm is an extension of our recent fast native 2-D fan-beam reconstruction algorithm. It is based on a recursive hierarchical decomposition of the cone-beam backprojection operation into successively smaller sub-volumes. The algorithm reduces the computational complexity of the reconstruction from O(N/sup 4/) to O(N/sup 3/ log N). Simulations demonstrate the efficiency of our algorithm, with 7-fold speedup for a 128 /spl times/ 128 /spl times/ 128 image. Speedups will be much greater for images of more typical size encountered in medicine." @default.
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- W1561512957 date "2004-06-03" @default.
- W1561512957 modified "2023-09-26" @default.
- W1561512957 title "Fast Feldkamp algorithm for cone-beam computer tomography" @default.
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- W1561512957 doi "https://doi.org/10.1109/icip.2003.1246806" @default.
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