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Registration of three dimensional image data with patient in a projection imaging system

  • US 20060269165A1
  • Filed: 05/05/2006
  • Published: 11/30/2006
  • Est. Priority Date: 05/06/2005
  • Status: Active Grant
First Claim
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1. A method for registration of a previously acquired three-dimensional image data set of an organ of interest in a patient, to the patient positioned in a projection imaging system, comprising the steps of:

  • (a) identifying landmark points on a set of projections acquired in the projection imaging system;

    (b) identifying surface contour points for the organ of interest in the three-dimensional image;

    (c) projecting the surface contour points of step (b) in the geometry of the projection imaging system;

    (d) defining as a registration figure-of-merit a distance between projected contour points of step (c) and landmark points of step (a); and

    (e) calculating a translation vector that when applied to the three-dimensional image data set minimizes the registration figure-of-merit of step (d), whereby registration of the previously acquired three-dimensional data set of an organ of interest to the patient positioned in a projection imaging system is achieved with a degree of efficiency by applying the translation vector of step (d) to the three-dimensional data set.

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