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System and method for detection of lesions in three-dimensional digital medical image

  • US 9,014,447 B2
  • Filed: 02/26/2010
  • Issued: 04/21/2015
  • Est. Priority Date: 02/27/2009
  • Status: Expired due to Fees
First Claim
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1. A method for characterizing a point in a three-dimensional digital medical image, the method comprising:

  • determining, by a processor, third order derivatives of the three-dimensional digital medical image at one or more points within the three-dimensional digital medical image;

    determining, by the processor, at each of the one or more points, using the third order derivatives of the three-dimensional digital medical image, one or more invariant features that characterize a local geometry at the point, each of the one or more invariant features being invariant with respect to a parameterization of a surface which relates to the local geometry; and

    characterizing each of the one or more points using the one or more determined invariant features; and

    distinguishing a first area within the three-dimensional medical image which relates to an abnormal tissue from a second area within the three-dimensional medical image which relates to a normal body tissue, based on a contrast therebetween with respect to greyscale representations of points included in the first area and points included in the second area,wherein the characterizing comprises assigning a respective greyscale representation to each point in the three-dimensional medical image based on the determined third-order derivative for the corresponding point.

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