Systems and methods for identifying bone marrow in medical images
First Claim
1. A method for identifying bone marrow in medical image data, the method comprising:
- obtaining a three-dimensional (3D) computed tomography (CT) volume data set corresponding to an imaged volume, the 3D CT volume data set acquired by a CT imaging system;
identifying voxels in the 3D CT volume data set having a Hounsfield Unit (HU) value below a bone threshold, the voxels identified by one or more processors without using image continuity;
marking the identified voxels as non-hone voxels and the non-identified voxels as bone voxels;
determining, using the one or more processors, from the marked non-bone voxels, definite tissue voxels and non-definite tissue voxels, wherein determining includes identifying voxels surrounded by only marked non-bone voxels and connected, either directly or indirectly, to an initial voxel that is a marked non-bone voxel by other voxels that have been identified as definite tissue voxels, the identified voxels are marked as definite tissue voxels;
expanding a region defined by the definite tissue voxels;
masking the definite tissue voxels to remove the definite tissue voxels from the 3D CT volume data set; and
identifying bone marrow from the non-definite tissue as un-masked voxels that are not the marked bone voxels.
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Abstract
Systems and method for identifying bone marrow in medical images are provided. A method includes obtaining a three-dimensional (3D) computed tomography (CT) volume data set corresponding to an imaged volume and identifying voxels in the 3D CT volume data set having a Hounsfield Unit (HU) value below a bone threshold. The voxels are identified without using image continuity. The method further includes marking the identified voxels as non-bone voxels, determining definite tissue voxels based on the identified non-bone voxels and expanding a region defined by the definite tissue voxels. The method also includes segmenting the expanded region to identify bone voxels and bone marrow voxels and identifying bone marrow as voxels that are not the bone voxels.
19 Citations
13 Claims
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1. A method for identifying bone marrow in medical image data, the method comprising:
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obtaining a three-dimensional (3D) computed tomography (CT) volume data set corresponding to an imaged volume, the 3D CT volume data set acquired by a CT imaging system; identifying voxels in the 3D CT volume data set having a Hounsfield Unit (HU) value below a bone threshold, the voxels identified by one or more processors without using image continuity; marking the identified voxels as non-hone voxels and the non-identified voxels as bone voxels; determining, using the one or more processors, from the marked non-bone voxels, definite tissue voxels and non-definite tissue voxels, wherein determining includes identifying voxels surrounded by only marked non-bone voxels and connected, either directly or indirectly, to an initial voxel that is a marked non-bone voxel by other voxels that have been identified as definite tissue voxels, the identified voxels are marked as definite tissue voxels; expanding a region defined by the definite tissue voxels; masking the definite tissue voxels to remove the definite tissue voxels from the 3D CT volume data set; and identifying bone marrow from the non-definite tissue as un-masked voxels that are not the marked bone voxels. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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Specification