Method for cell envelope segmentation and visualisation
First Claim
1. A method for a user to generate a reliable computer-aided segmentation and visualization of a plurality of cells of the paranasal sinuses for guiding a surgical instrument wherein the method is at least partially executed on an information processing system, said method comprising the steps of:
- a. receiving 3D patient image data of the paranasal sinuses;
b. receiving a manual pre-segmentation of the plurality of cells, the manual pre-segmentation of cells comprising a user input defining a geometric primitive in a slice image of the 3D patient image data for generating a cell envelope, the geometric primitive comprising a shape selected from a group comprising a cuboid, sphere, cylinder and ellipse and each having a position, size, and depth defined by the user;
c. adjusting the cell envelope by optimizing the shape, position, orientation, and/or size of the geometric primitive based on an analysis of a cell anatomy within the pre-segmented geometric primitive without additional input from the user;
d. determining, by the information processing system, a natural drainage pathway between, along, and/or around the plurality of segmented cells using pathfinding algorithms based on the 3D patient image data;
e. displaying the cell envelope and the natural drainage pathway relative to the 3D patient image data; and
f. displaying the natural drainage pathway as linked cylindrical segments in augmented reality views.
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Accused Products
Abstract
The present invention relates to a method for the segmentation and visualization of cell envelopes. A method is provided for the segmentation and visualization of cavities or orifices of the human body, comprising the steps of manual pre-segmentation of cells by defining enclosing geometric primitives in a 3D patient image for generating initial cell envelopes; analysing the cell anatomy within pre-segmented geometric primitives; using the result of the analysis for adjustment of the cell envelope and visualising the cell envelopes.
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Citations
20 Claims
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1. A method for a user to generate a reliable computer-aided segmentation and visualization of a plurality of cells of the paranasal sinuses for guiding a surgical instrument wherein the method is at least partially executed on an information processing system, said method comprising the steps of:
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a. receiving 3D patient image data of the paranasal sinuses; b. receiving a manual pre-segmentation of the plurality of cells, the manual pre-segmentation of cells comprising a user input defining a geometric primitive in a slice image of the 3D patient image data for generating a cell envelope, the geometric primitive comprising a shape selected from a group comprising a cuboid, sphere, cylinder and ellipse and each having a position, size, and depth defined by the user; c. adjusting the cell envelope by optimizing the shape, position, orientation, and/or size of the geometric primitive based on an analysis of a cell anatomy within the pre-segmented geometric primitive without additional input from the user; d. determining, by the information processing system, a natural drainage pathway between, along, and/or around the plurality of segmented cells using pathfinding algorithms based on the 3D patient image data; e. displaying the cell envelope and the natural drainage pathway relative to the 3D patient image data; and f. displaying the natural drainage pathway as linked cylindrical segments in augmented reality views. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for a user to generate a reliable computer-aided segmentation and visualization of a plurality of cells of the paranasal sinuses for guiding a surgical instrument wherein the method is at least partially executed on an information processing system, said method comprising the steps of:
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a. receiving 3D patient image data of the paranasal sinuses; b. receiving a manual pre-segmentation of the plurality of cells, the manual pre-segmentation of cells comprising a user input defining a geometric primitive in a slice image of the 3D patient image data for generating a cell envelope, the geometric primitive comprising a shape selected from a group comprising a cuboid, sphere, cylinder and ellipse and each having a position, size, and depth defined by the user; c. adjusting the cell envelope by optimizing the shape, position, orientation, and/or size of the geometric primitive based on an analysis of a cell anatomy within the pre-segmented geometric primitive without additional input from the user; d. determining, by the information processing system, a natural drainage pathway between, along, and/or around segmented cells using pathfinding algorithms based on the 3D patient image data; e. displaying the cell envelope and the natural drainage pathway relative to the 3D patient image data; and wherein the adjusted cell envelope or the determined natural drainage pathway are displayed pre- or intra-operatively in a virtual endoscopic view or intra-operatively in an augmented-reality-view.
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11. A method for a user to generate a reliable computer-aided segmentation and visualization of a plurality of cells of the paranasal sinuses for guiding a surgical instrument wherein the method is at least partially executed on an information processing system, said method comprising the steps of:
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a. receiving 3D patient image data of the paranasal sinuses; b. receiving a manual pre-segmentation of the plurality of cells, the manual pre-segmentation of cells comprising a user input defining a geometric primitive in a slice image of the 3D patient image data for generating a cell envelope, the geometric primitive comprising a shape selected from a group comprising a cuboid, sphere, cylinder and ellipse and each having a position, size, and depth defined by the user; c. adjusting the cell envelope by optimizing the shape, position, orientation, and/or size of the geometric primitive based on an analysis of a cell anatomy within the pre-segmented geometric primitive without additional input from the user; d. determining, by the information processing system, a natural drainage pathway between, along, and/or around segmented cells using pathfinding algorithms based on the 3D patient image data; e. displaying the determined natural drainage pathway relative to the 3D patient image data; and wherein the step of displaying further comprises presenting the determined natural drainage pathway in a plurality of slice images, in a 3D view, in a virtual endoscopic view, or in an endoscopic augmented reality view as either; linked line segments, splines, inked curved cylindrical segments, meshes, or voxels. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification