Methods, systems and computer program products for positioning a guidance apparatus relative to a patient
First Claim
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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Accused Products
Abstract
A method for positioning a guide device for placement of an interventional object in a body, the guide device having a guide axis, includes: 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; 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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Citations
13 Claims
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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:
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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. - View Dependent Claims (2, 3)
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4. 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:
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determining a target point in the body and a pivot point, wherein the target point and the pivot 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, and wherein the sighting point is located on a segment of the PTL on a side of the pivot point proximate the target point; mounting the guide device relative to the body to pivot about the pivot point with respect to the PTL; 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. - View Dependent Claims (5)
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6. 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:
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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, and wherein the sighting point is located within the body; mounting the guide device relative to the body to move with respect to the PTL; 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. - View Dependent Claims (7, 8, 9, 10)
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11. 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:
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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, and wherein the PTL is orthogonal to the visualization plane; 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. - View Dependent Claims (12)
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13. 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:
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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 translate the guide axis with respect to the PTL; 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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Specification