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Methods, systems and computer program products for positioning a guidance apparatus relative to a patient

  • US 8,340,743 B2
  • Filed: 11/19/2008
  • Issued: 12/25/2012
  • Est. Priority Date: 11/21/2007
  • Status: Active Grant
First Claim
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1. A method for positioning a guide device for placement of an interventional object in a body, the guide device having a guide axis, the method comprising:

  • determining a target point in the body and a reference point, wherein the target point and the reference point define a planned trajectory line (PTL) extending through each;

    determining a visualization plane, wherein the PTL intersects the visualization plane at a sighting point;

    mounting the guide device relative to the body to move with respect to the PTL, wherein the guide device does not intersect the visualization plane;

    acquiring at least one MRI scan along the visualization plane;

    determining an acquisition plane, wherein the guide device intersects the acquisition plane;

    tracking a position of the guide device in the acquisition plane and determining therefrom a corresponding position and/or orientation of the guide axis, wherein tracking the position of the guide device in the acquisition plane includes acquiring at least one MRI scan along the acquisition plane;

    determining a point of intersection (GPP) between the guide axis and the visualization plane; and

    aligning the GPP with the sighting point in the visualization plane.

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