Method and apparatus for generating a 2D image having pixels corresponding to voxels of a 3D image

• US 20060251307A1
• Filed: 04/04/2006
• Published: 11/09/2006
• Est. Priority Date: 04/13/2005
• Status: Active Grant

• Current Assignee: Siemens Medical Solutions USA Incorporated (Siemens AG)
• Original Assignee: Siemens Medical Solutions USA Incorporated (Siemens AG)
• Inventors: Moreau-Gobard, Romain, Florin, Charles, Williams, James P.
• Granted Patent: US 7,746,340 B2
• Time in Patent Office: Days
• US Class Current: 382/128
• CPC Class Codes: G06T 11/008 Specific post-processing after tomographic reconstruction, e.g. voxelisation, metal artifact correction
• CPC Class Codes: G06T 15/08 Volume rendering

Abstract

Disclosed is a method and apparatus for generating a two dimensional (2D) image of a structure (e.g., an organ) that has at least one pixel corresponding to at least one voxel of a three dimensional (3D) image of the structure. First, the surface of the structure in the 3D image is modeled by a geometrical volume such as an ellipsoid. Next, normal maximum intensity projection (MIP) rays are cast (i.e., projected) for voxels of the geometrical volume. The 2D image is then generated using the rays. The 2D image has at least one pixel that corresponds to at least one voxel of the 3D image.

Claims

1. A method for generating a two dimensional (2D) image of a structure having at least one pixel corresponding to at least one voxel of a three dimensional (3D) image of said structure comprising:

modeling the surface of said structure in said 3D image using a geometrical volume;

projecting normal maximum intensity projection (MIP) rays for voxels of the geometrical volume; and

generating said 2D image having said at least one pixel corresponding to said at least one voxel of said 3D image using said MIP rays.

2. The method of claim 1 further comprising displaying at least one of said 3D image and said 2D image.

3. The method of claim 2 further comprising positioning said 3D image to highlight a particular voxel corresponding to a selected pixel of said 2D image.

4. The method of claim 3 wherein said positioning of said 3D image further comprises at least one of scaling said structure in said 3D image and rotating said structure in said 3D image.

5. The method of claim 1 further comprising enabling selection of a particular pixel of said 2D image.

6. The method of claim 5 wherein said enabling a selection of a particular pixel of said 2D image further comprises enabling a selection of a ray of said 2D image.

7. The method of claim 6 further comprising displaying said 3D image to highlight a vessel that corresponds to said ray.

8. The method of claim 6 further comprising displaying said 3D image to highlight a region of interest that corresponds to said ray.

9. A computer readable medium comprising computer program instructions capable of being executed in a processor and defining the steps comprising:

modeling the surface of a structure in a 3D image using a geometrical volume;

projecting normal maximum intensity projection (MIP) rays for voxels of said geometrical volume; and

generating a 2D image having at least one pixel corresponding to at least one voxel of said 3D image using said MIP rays.

10. The computer readable medium of claim 9 further comprising computer program instructions defining the step of displaying said structure to highlight a particular voxel corresponding to a selected pixel of said 2D image.

11. The computer readable medium of claim 10 wherein said step of displaying comprises at least one of scaling said 3D image and rotating said 3D image.

12. The computer readable medium of claim 9 further comprising computer program instructions defining the step of enabling a selection of a particular pixel of said 2D image.

13. The computer readable medium of claim 12 wherein said step of enabling a selection of a particular pixel of said 2D image further comprises enabling a selection of a ray of said 2D image.

14. The computer readable medium of claim 13 wherein said step of enabling a selection of said ray of said 2D image further comprises displaying said 3D image in a manner to highlight a vessel that corresponds to said ray.

15. The computer readable medium of claim 13 wherein said step of enabling a selection of said ray of said 2D image further comprises displaying said 3D image in a manner to highlight a region of interest that corresponds to said ray.

16. An apparatus for generating a two dimensional (2D) image of a structure having at least one pixel corresponding to at least one voxel of a three dimensional (3D) image of said structure comprising:

means for modeling the surface of said structure in said 3D image using a geometrical volume;

means for projecting normal maximum intensity projection (MIP) rays for voxels of the geometrical volume; and

means for generating said 2D image having said at least one pixel corresponding to said at least one voxel of said 3D image using said MIP rays.

17. The apparatus of claim 16 further comprising means for displaying at least one of said 3D image and said 2D image.

18. The apparatus of claim 17 further comprising means for positioning said 3D image to highlight a particular voxel corresponding to a selected pixel of said 2D image.

19. The apparatus of claim 18 wherein said means for positioning of said 3D image further comprises at least one of means for scaling said structure in said 3D image and means for rotating said structure in said 3D image.

20. The apparatus of claim 16 further comprising means for enabling selection of a particular pixel of said 2D image.

21. The apparatus of claim 20 wherein said means for enabling a selection of a particular pixel of said 2D image further comprises means for enabling a selection of a ray of said 2D image.

22. The apparatus of claim 21 further comprising means for positioning said 3D image to highlight a vessel that corresponds to said ray.

23. The apparatus of claim 21 further comprising means for positioning said 3D image to highlight a region of interest that corresponds to said ray.