Please download the dossier by clicking on the dossier button x
×

Method for navigating in the interior of the body using three-dimensionally visualized structures

  • US 7,167,738 B2
  • Filed: 07/31/2001
  • Issued: 01/23/2007
  • Est. Priority Date: 08/01/2000
  • Status: Active Grant
First Claim
Patent Images

1. Method for navigating in the interior of the body using three-dimensionally visualized structures, comprising the following steps:

  • providing at least two two-dimensional images (50, 50

    ) of the same anatomical object (12) from different perspectives and also of information which makes it possible to draw a conclusion about the respective spatial position of an imaging system (26) relative to the anatomical object (12);

    defining a projection (76, 76

    , 78, 78

    ) of a geometrical structure (72, 80, 82) to be visualized or a part thereof in each two-dimensional image, wherein the geometrical structure (72, 80, 82) to be visualized is different from the anatomical object (12);

    generating a conical surface (40, 40

    ) in space for every image (50, 50

    ), wherein the spatial positions of cone vertex (46, 46

    ) and cone directrix are determined from the respective spatial position of the imaging system (26) and the shape of the cone directrix is determined from the shape of the projection (76, 76

    , 78, 78

    ) of the geometrical structure (72, 80, 82) to be visualized;

    forming a spatial intersection of the individual conical surfaces (40, 40

    ) to determine the geometrical structure (72, 80, 82); and

    displaying the geometrical structure (72, 80, 82) determined and/or an intersection (74) of a plurality of geometrical structures (72, 80, 82) determined and using the representation for navigation.

View all claims
  • 6 Assignments
Timeline View
Assignment View
    ×
    ×