Method and system for navigating through an occluded tubular...

Details Method and system for navigating through an occluded tubular... Method and system for navigating through an occluded tubular...

A - Human Necessities

61

M

A61M 25/01 (2006.01) A61B 6/02 (2006.01) A61M 25/09 (2006.01) A61M 25/095 (2006.01)

Patent

CA 2613165

Method for generating a 3D-model of a tubular organ having an occluded segment, adjoining a proximal segment and a distal segment at a proximal end and distal end, respectively. The method includes injecting a first and a second dye-injection into the organ, approaching a first end and second end of the occluded segment, respectively, and acquiring a plurality of first-injection and second-injection 2D-images of the organ, each acquired from a different perspective, the 2D-images acquired with an organ timing signal. Further, generating superimposed 2D-images, one for each perspective, including the proximal and distal segments; and determining the boundaries of the proximal and distal segments in the superimposed 2D-images, and of the occluded segment by interpolating between the boundaries of the proximal and distal segments. Further generating a 3D-model of the organ from the superimposed 2D-images, and determining a 3D-centerline of the organ, passing through the proximal, occluded and distal segments.

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