Noise treatment of low-dose computed tomography projections and images
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United States of America Patent
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Mar 6, 2007
Grant Date -
Apr 24, 2003
app pub date -
Oct 18, 2002
filing date -
Oct 18, 2001
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Expired
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Abstract
A method for treating noise in low-dose computed tomography projections and reconstructed images comprises acquiring raw data at a low mA value, applying a domain specific filter in a sinogram domain of the raw data, and applying an edge preserving smoothing filter in an image domain of the raw data after filtering in the sinogram domain.
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