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Method and apparatus for 3D metal and high-density artifact correction for cone-beam and fan-beam CT imaging

  • US 8,023,767 B1
  • Filed: 03/10/2008
  • Issued: 09/20/2011
  • Est. Priority Date: 03/10/2008
  • Status: Active Grant
First Claim
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1. A method for producing an image of a region of interest while correcting artifacts caused by sub-objects within the region of interest, the method comprising:

  • (a) taking three-dimensional image data of the region of interest;

    (b) providing a library of shape information and imaging characteristics of the sub-objects;

    (c) using the three-dimensional image data and the library to produce images of the sub-objects in the region of interest;

    (d) using an iterative optimization process to produce segmented images of the sub-objects in the region of interest;

    (e) using the segmented images to produce error projections; and

    (f) using the error projections to produce the image of the region of interest such that the artifacts are corrected in the image.

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