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- Inventor(s):
- Zhou Yu, Evgeny Drapkin, Bruno Kristiaan Bernard De Man, Jean-Baptiste Thibault, Kai Zeng, Jiang Hsieh, Brian E. Nett, Debashish Pal, Lin Fu, Guangzhi Cao, Charles A. Bouman, Ken D. Sauer
- Patent Number:
- US 9020230 B2
- Description:
A method for reconstructing an image of an object that includes a plurality of image elements. The method includes accessing image data associated with a plurality of image elements, and reconstructing an image of the object by optimizing an objective function, where the objective function is optimized by iteratively solving a nested sequence of approximate optimization problems. The algorithm is composed of nested iterative loops, in which an inner loop iteratively optimizes an objective fun…
- Date Issued:
- 2015-04-28
- Record Visibility:
- Public
- Title
- Method and apparatus for iterative reconstruction
- Description
- A method for reconstructing an image of an object that includes a plurality of image elements. The method includes accessing image data associated with a plurality of image elements, and reconstructing an image of the object by optimizing an objective function, where the objective function is optimized by iteratively solving a nested sequence of approximate optimization problems. The algorithm is composed of nested iterative loops, in which an inner loop iteratively optimizes an objective function approximating the outer loop objective function, and an outer loop that utilizes the solution of the inner loop to optimize the original objective function.
- Creator
- Zhou Yu, Evgeny Drapkin, Bruno Kristiaan Bernard De Man, Jean-Baptiste Thibault, Kai Zeng, Jiang Hsieh, Brian E. Nett, Debashish Pal, Lin Fu, Guangzhi Cao, Charles A. Bouman, Ken D. Sauer
- Publisher
- U.S. Patent and Trademark Office
- Language
- English
- Rights
- All rights reserved
- Resource Type
- Patent
-
- Inventor(s):
- Guangzhi Cao, Jiang Hsieh, Jean-Baptiste Thibault, Jiahua Fan, Ken D. Sauer
- Patent Number:
- US 9538974 B2
- Description:
Various methods and systems are provided for estimating and compensating for table deflection in reconstructed images. In one embodiment, a method for computed tomography (CT) imaging comprises reconstructing images from data acquired during a helical CT scan where table deflection parameters are estimated and the reconstruction is adjusted based on the table deflection parameters. In this way, images may be reconstructed without artifacts caused by table deflection.
- Date Issued:
- 2017-01-10
- Record Visibility:
- Public
- Title
- Methods and systems for correcting table deflection
- Description
- Various methods and systems are provided for estimating and compensating for table deflection in reconstructed images. In one embodiment, a method for computed tomography (CT) imaging comprises reconstructing images from data acquired during a helical CT scan where table deflection parameters are estimated and the reconstruction is adjusted based on the table deflection parameters. In this way, images may be reconstructed without artifacts caused by table deflection.
- Creator
- Guangzhi Cao, Jiang Hsieh, Jean-Baptiste Thibault, Jiahua Fan, Ken D. Sauer
- Publisher
- U.S. Patent and Trademark Office
- Language
- English
- Rights
- All rights reserved
- Resource Type
- Patent