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Image positioning method and system for tomosynthesis in a digital X-ray radiography system

  • US 6,960,020 B2
  • Filed: 08/30/2002
  • Issued: 11/01/2005
  • Est. Priority Date: 08/31/2001
  • Status: Active Grant
First Claim
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1. A method for aligning an image of a target object for tomosynthesis in a x-ray radiography system of the type including an x-ray source, and an x-ray detector system for detecting x-rays emitted from the x-ray source and transmitted through said object, comprising:

  • a. positioning at least one marker between said x-ray source and said detector system;

    b. moving said x-ray source after step a; and

    c. measuring a shift in the image of the at least one marker caused by said motion of said x-ray source;

    d. correlating the shift measured in step c with a corresponding shift in the image of a point of interest in the target object, thereby determining a shift in the image of the point of interest in the target object caused by said motion of said x-ray source.

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