METHOD FOR SEGMENTATION OF LESIONS
First Claim
1. A method of image segmentation, comprising:
- a) receiving a set of voxels;
b) segmenting the set of voxels into a foreground group and a background group;
c) classifying voxels of the foreground group as either lesion voxels or normal anatomy voxels;
d) blocking the normal anatomy voxels;
e) performing a second segmentation on voxels of the background group and the lesion voxels, the second segmentation forming a stage two foreground group comprising the lesion voxels and a portion of the voxels of the background group; and
f) classifying voxels of the stage two foreground group as either stage two lesion voxels or stage two normal anatomy voxels.
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Abstract
A method of image segmentation includes receiving a set of voxels, segmenting the set of voxels into a foreground group and a background group, and classifying voxels of the foreground group as either lesion voxels or normal anatomy voxels. The method also includes blocking the normal anatomy voxels and performing a second segmentation on voxels of the background group and the lesion voxels, the second segmentation forming a stage two foreground group comprising the lesion voxels and a portion of the voxels of the background group. The method further includes classifying voxels of the stage two foreground group as either stage two lesion voxels or stage two normal anatomy voxels.
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Citations
22 Claims
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1. A method of image segmentation, comprising:
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a) receiving a set of voxels; b) segmenting the set of voxels into a foreground group and a background group; c) classifying voxels of the foreground group as either lesion voxels or normal anatomy voxels; d) blocking the normal anatomy voxels; e) performing a second segmentation on voxels of the background group and the lesion voxels, the second segmentation forming a stage two foreground group comprising the lesion voxels and a portion of the voxels of the background group; and f) classifying voxels of the stage two foreground group as either stage two lesion voxels or stage two normal anatomy voxels. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of image segmentation, comprising:
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a) receiving a set of voxels that were segmented into at least three classes by previous voxel segmentation; b) defining a region for a further voxel segmentation, the region excluding voxels of one of the at least three classes; c) performing the further voxel segmentation within the region, the further voxel segmentation being more aggressive than the previous voxel segmentation, the further voxel segmentation separating voxels in the region into at least two of the at least three classes; and d) creating a composite class map based on the previous voxel segmentation and the further voxel segmentation. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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19. A method of image segmentation, comprising:
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a) performing a first segmentation capable of distinguishing between a first structure and a second structure but incapable of determining a full extent of the first structure; b) defining a region for a second segmentation, the region excluding the second structure; and c) performing the second segmentation within the region, the second segmentation capable of determining a greater extent of the first structure than the first segmentation. - View Dependent Claims (20, 21, 22)
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Specification