Method and apparatus for CT image reconstruction
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United States of America Patent
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May 13, 2014
Grant Date -
May 3, 2012
app pub date -
May 11, 2011
filing date -
Oct 28, 2010
priority date (Note) -
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Abstract
A method and apparatus for CT image reconstruction may include selecting, by a unit, projection data of the same height on a curve having a curvature approximate to that of the scanning circular orbit, implementing, by a unit, a weighting processing on the selected projection data, filtering, by a unit, the weighting processed projection data along a horizontal direction, implementing, by a unit, three-dimensional back projection on the filtered projection data along the direction of ray. The method and apparatus can effectively eliminate cone beam artifact under a large cone angle.
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