Computed tomography approach to edge reconstruction
AssigneeNational Technology & Engineering Solutions of Sandia, LLC
InventorsEdward Steven Jimenez, JR., Cody M. Washburn
Life of this patent
Estimating the term…
Abstract
A computer-implemented method of reconstructing boundaries from a computed tomography (CT) image dataset is provided. The method comprises receiving CT image data and applying a number of image filters to the CT image data. A numerical derivative is applied to the filtered CT image data to flatten and suppress non-edge regions that do not correspond to edges. Numerical derivative values are clipped to a specified range to reduce artifacts and noise, and an X-ray image is reconstructed according to the image filters and clipped numerical derivative values.
Claims20
A computer-implemented method of reconstructing boundaries from a computed tomography (CT) image dataset, the method comprising:
- using a number of processors to perform the steps of:
- receiving CT image data;
- applying a number of image filters to the CT image data;
- applying a numerical derivative to the filtered CT image data to flatten and suppress non-edge regions that do not correspond to edges;
- clipping numerical derivative values to a specified range to reduce artifacts and noise;
- and
- reconstructing an X-ray image according to the image filters and clipped numerical derivative values.
A system for reconstructing boundaries from a computed tomography (CT) image dataset, the system comprising:
- a storage device configured to store program instructions;
- and
- one or more processors operably connected to the storage device and configured to execute the program instructions to cause the system to:
- receive CT image data;
- apply a number of image filters to the CT image data;
- apply a numerical derivative to the filtered CT image data to flatten and suppress non-edge regions that do not correspond to edges;
- clip numerical derivative values to a specified range to reduce artifacts and noise;
- and
- reconstruct an X-ray image according to the image filters and clipped numerical derivative values.
A computer program product for reconstructing boundaries from a computed tomography (CT) image dataset, the computer program product comprising:
- a computer-readable storage medium having program instructions embodied thereon to perform the steps of:
- receiving CT image data;
- applying a number of image filters to the CT image data;
- applying a numerical derivative to the filtered CT image data to flatten and suppress non-edge regions that do not correspond to edges;
- clipping numerical derivative values to a specified range to reduce artifacts and noise;
- and
- reconstructing an X-ray image according to the image filters and clipped numerical derivative values.
A computer-implemented method of reconstructing boundaries from a computed tomography (CT) image dataset, the method comprising:
- using a number of processors to perform the steps of:
- receiving CT image data;
- creating a sinogram from the CT image data;
- applying a number of image filters to the sinogram;
- applying a numerical derivative to the filtered sinogram to flatten and suppress non-edge regions that do not correspond to edges;
- clipping numerical derivative values to a specified range to reduce artifacts and noise;
- reformatting the sinogram to a radiograph;
- and
- reconstructing an X-ray image according to the image filters and clipped numerical derivative values.
A system for reconstructing boundaries from a computed tomography (CT) image dataset, the system comprising:
- a storage device configured to store program instructions;
- and
- one or more processors operably connected to the storage device and configured to execute the program instructions to cause the system to:
- receive CT image data;
- create a sinogram from the CT image data;
- apply a number of image filters to the sinogram;
- apply a numerical derivative to the filtered sinogram to flatten and suppress non-edge regions that do not correspond to edges;
- clip numerical derivative values to a specified range to reduce artifacts and noise;
- reformat the sinogram to a radiograph;
- and
- reconstruct an X-ray image according to the image filters and clipped numerical derivative values.
A computer program product for reconstructing boundaries from a computed tomography (CT) image dataset, the computer program product comprising:
- a computer-readable storage medium having program instructions embodied thereon to perform the steps of:
- receiving CT image data;
- creating a sinogram from the CT image data;
- applying a number of image filters to the sinogram;
- applying a numerical derivative to the filtered sinogram to flatten and suppress non-edge regions that do not correspond to edges;
- clipping numerical derivative values to a specified range to reduce artifacts and noise;
- reformatting the sinogram to a radiograph;
- and
- reconstructing an X-ray image according to the image filters and clipped numerical derivative values.
Dependencies are inferred from the claim text.