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Method and system for the automated temporal subtraction of medical images

  • US 6,363,163 B1
  • Filed: 02/23/1998
  • Issued: 03/26/2002
  • Est. Priority Date: 02/23/1998
  • Status: Expired due to Fees
First Claim
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1. A method for detecting interval change, comprising:

  • obtaining a first three-dimensional image of a subject by scanning said subject in a scanning direction;

    obtaining a second three-dimensional image of said subject by scanning said subject in said scanning direction;

    matching three dimensionally said first and second images in said scanning direction;

    matching two-dimensionally said first and second images after matching in said scanning direction; and

    non-linearly warping said first image to produce a warped image after said three- and two-dimensional matching; and

    subtracting said warped image from said second image;

    wherein matching two-dimensionally comprises;

    selecting a first section of said first image based upon a feature in said first image;

    selecting a second section of said second image based upon said feature in said second image;

    selecting a plurality of sections adjacent to first section of said first image; and

    comparing each of said first section and said plurality of sections to said second section.

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