Random sinogram variance reduction in continuous bed motion acquisition
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United States of America Patent
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Jun 2, 2015
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Jul 10, 2014
app pub date -
Jan 9, 2013
filing date -
Jan 9, 2013
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Abstract
Random sinogram variance is reduced in continuous bed motion acquisition. The randoms are modeled as a product of transverse singles efficiencies. The random sinogram is assumed to be a smooth function in the axial direction, collapsing the parameterization for estimating the transverse singles efficiencies into a single, conceptual ring. By solving the product, the mean random values are used to smooth the randoms in image reconstruction with less noise and artifacts.
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