Patent ID: 6363163
Filing Date: 2002-03-26
Classification: A61B,G06T

Abstract:
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.