Clinical tool for structure localization
First Claim
Patent Images
1. A method, comprising:
- generating a three dimensional image of a body portion including a targeted structure for a surgical procedure;
selecting reference structures located in the generated three dimensional image;
calculating landmark point coordinates for defining locations of each of the targeted structure and the reference structures to generate respective targeted structure landmark point coordinates and reference structures landmark point coordinates;
computing triangulation parameters relating the location of the targeted structure landmark point coordinates to the reference structures landmark point coordinates, wherein the computed triangulation parameters include a distance ratio and an angle, wherein the distance ratio relates the lengths of two sides of a triangle formed by the targeted structure landmark point coordinates and two landmark point coordinates of the reference structures landmark point coordinates and the angle is the angle formed between the two sides of the triangle;
acquiring an intra-operative three dimensional image during the surgical procedure;
identifying locations of the reference structures in the intra-operative image; and
plotting a location of the targeted structure on the intra-operative image in response to the computed triangulation parameters and the identified locations of the reference structures in the intra-operative image.
1 Assignment
0 Petitions
Accused Products
Abstract
A method for localizing an internal body structure during an image-guided procedure that includes obtaining a three dimensional image of a body portion containing a targeted structure and selected reference structures; determining a set of landmark point coordinates for defining the location of each of the targeted and reference structures; computing triangulation parameters relating the location of the landmark points for the targeted structure and the reference structures; and, during an image-guided procedure, using the computed triangulation parameters to plot an estimated location of the targeted structure on an intra-operative image in which the reference structures have been identified.
-
Citations
25 Claims
-
1. A method, comprising:
-
generating a three dimensional image of a body portion including a targeted structure for a surgical procedure; selecting reference structures located in the generated three dimensional image; calculating landmark point coordinates for defining locations of each of the targeted structure and the reference structures to generate respective targeted structure landmark point coordinates and reference structures landmark point coordinates; computing triangulation parameters relating the location of the targeted structure landmark point coordinates to the reference structures landmark point coordinates, wherein the computed triangulation parameters include a distance ratio and an angle, wherein the distance ratio relates the lengths of two sides of a triangle formed by the targeted structure landmark point coordinates and two landmark point coordinates of the reference structures landmark point coordinates and the angle is the angle formed between the two sides of the triangle; acquiring an intra-operative three dimensional image during the surgical procedure; identifying locations of the reference structures in the intra-operative image; and plotting a location of the targeted structure on the intra-operative image in response to the computed triangulation parameters and the identified locations of the reference structures in the intra-operative image. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
-
-
14. A method, comprising:
-
generating a three dimensional image of a body portion including a targeted structure for a surgical procedure; selecting reference structures included in the image; calculating landmark point coordinates for defining the locations of each of the targeted structure and the reference structures to generate respective targeted structure landmark point coordinates and reference structures landmark point coordinates; defining an isocenter axis location in the patient'"'"'s body about which a two-dimensional imaging plane is rotated; rotating the targeted structure landmark point coordinates and the reference structures landmark point coordinates about the isocenter axis to a selected planar imaging view; calculating the targeted structure landmark point coordinates and the reference structures landmark point coordinates projected onto the selected planar view; computing triangulation parameters relating the location of the projected targeted structure landmark point coordinates to the projected reference structures landmark point coordinates, wherein the computed triangulation parameters include a distance ratio and an angle, wherein the distance ratio relates the lengths of two sides of a triangle formed by the targeted structure landmark point coordinates and two reference structure landmark points of the reference structures landmark point coordinates and the angle is the angle formed between the two sides of the triangle; acquiring an intra-operative two-dimensional image during the surgical procedure; identifying the locations of the selected reference structures in the intra-operative image; and plotting a location of the targeted structure on the intra-operative image in response to the computed triangulation parameters and the identified locations of the reference structures in the intra-operative image. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
-
Specification