Three-dimensional reprojection and backprojection methods and algorithms for implementation thereof
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United States of America Patent
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Jun 5, 2007
Grant Date -
Jan 22, 2004
app pub date -
Jan 31, 2003
filing date -
Apr 15, 2002
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Abstract
Methods for three-dimensional projecting and backprojecting rays with respect to voxels/detector bins to attenuate/eliminate high-frequency artifacts, are disclosed. A distance-driven technique wherein the transitions of the voxels and the detector bins are respectively projected onto a predetermined plane. This projection allows a determination of the contribution of each of the voxels/bins for each of the bins/voxels with lower computation time and improved artifact free images.
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