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CT systems with oblique image planes

  • US 6,178,220 B1
  • Filed: 10/18/1999
  • Issued: 01/23/2001
  • Est. Priority Date: 11/28/1996
  • Status: Expired due to Fees
First Claim
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1. A method for reconstructing one or more non-axial image slices in a CT scanner, comprising:

  • reconstructing the one or more oblique or non-planar image slices, by processing X-ray attenuation data acquired over an axial range, to determine CT values at a plurality of points along one or more surfaces corresponding respectively to each of one or more oblique or non-planar image slices; and

    removing ring artifacts from the reconstructed images, wherein processing the attenuation data comprises back-projecting the data directly to the plurality of points along each of the one or more surfaces.

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