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  • 1

    Patent

    Method and apparatus for iterative reconstruction
    Thumbnail
    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
  • 2

    Patent

    System and method of iterative image reconstruction for computed tomography
    Thumbnail
    Inventor(s):
    Jean-Baptiste Thibault, Xue Rui, Somesh Srivastava, Ken D. Sauer, Lin Fu, Charles A. Bouman
    Patent Number:
    US 9261467 B2
    Description:

    A system and method include acquisition of projection data from a scanned object, the set of projection data comprising a plurality of projection measurements. The system and method also include calculation of a set of modified statistical weights from the projection data, wherein a respective modified statistical weight of the set of modified statistical weights comprises a deviation from an inverse variance of a corresponding projection measurement of the projection data. The system and met…

    Date Issued:
    2016-02-16
    Record Visibility:
    Public
    Title
    System and method of iterative image reconstruction for computed tomography
    Description
    A system and method include acquisition of projection data from a scanned object, the set of projection data comprising a plurality of projection measurements. The system and method also include calculation of a set of modified statistical weights from the projection data, wherein a respective modified statistical weight of the set of modified statistical weights comprises a deviation from an inverse variance of a corresponding projection measurement of the projection data. The system and method further include reconstruction of an image of the scanned object using the set of modified statistical weights as coefficients in an iterative reconstruction algorithm.
    Creator
    Jean-Baptiste Thibault, Xue Rui, Somesh Srivastava, Ken D. Sauer, Lin Fu, Charles A. Bouman
    Publisher
    U.S. Patent and Trademark Office
    Language
    English
    Rights
    All rights reserved
    Resource Type
    Patent
  • 3

    Patent

    System and method of iterative image reconstruction for computed tomography
    Thumbnail
    Inventor(s):
    Jean-Baptiste Thibault, Bruno Kristiaan Bernard De Man, Kai Zeng, Zhou Yu, Charles A. Bouman, Ken D. Sauer
    Patent Number:
    US 8787521 B2
    Description:

    A system and method include acquisition of a set of image data corresponding to a time period of data acquisition, the set of image data corresponding to a plurality of voxels, wherein each of the plurality of voxels corresponds to a distinct acquisition time within the time period of data acquisition. The system and method further include the modeling of the plurality of voxels as a function of time based on a plurality of kinetic parameters associated therewith and reconstruction of an imag…

    Date Issued:
    2014-07-22
    Record Visibility:
    Public
    Title
    System and method of iterative image reconstruction for computed tomography
    Description
    A system and method include acquisition of a set of image data corresponding to a time period of data acquisition, the set of image data corresponding to a plurality of voxels, wherein each of the plurality of voxels corresponds to a distinct acquisition time within the time period of data acquisition. The system and method further include the modeling of the plurality of voxels as a function of time based on a plurality of kinetic parameters associated therewith and reconstruction of an image from the set of image data based on the modeled plurality of voxels.
    Creator
    Jean-Baptiste Thibault, Bruno Kristiaan Bernard De Man, Kai Zeng, Zhou Yu, Charles A. Bouman, Ken D. Sauer
    Publisher
    U.S. Patent and Trademark Office
    Language
    English
    Rights
    http://creativecommons.org/publicdomain/zero/1.0/
    Resource Type
    Patent
  • 4

    Patent

    Systems and methods for guided de-noising for computed tomography
    Thumbnail
    Inventor(s):
    Jean-Baptiste Thibault, Debashish Pal, Jie Tang, Ken D. Sauer, Charles A. Bouman, Ruoqiao Zhang
    Patent Number:
    US 9460485 B2
    Description:

    A method includes obtaining spectral computed tomography (CT) information via an acquisition unit having an X-ray source and a CT detector. The method also includes, generating, with one or more processing units, using at least one image transform, a first basis image and a second basis image using the spectral CT information. Further, the method includes performing, with the one or more processing units, guided processing on the second basis image using the first basis image as a guide to pr…

    Date Issued:
    2016-10-04
    Record Visibility:
    Public
    Title
    Systems and methods for guided de-noising for computed tomography
    Description
    A method includes obtaining spectral computed tomography (CT) information via an acquisition unit having an X-ray source and a CT detector. The method also includes, generating, with one or more processing units, using at least one image transform, a first basis image and a second basis image using the spectral CT information. Further, the method includes performing, with the one or more processing units, guided processing on the second basis image using the first basis image as a guide to provide a modified second basis image. Also, the method includes performing at least one inverse image transform using the first basis image and the modified second basis image to generate at least one modified image.
    Creator
    Jean-Baptiste Thibault, Debashish Pal, Jie Tang, Ken D. Sauer, Charles A. Bouman, Ruoqiao Zhang
    Publisher
    U.S. Patent and Trademark Office
    Language
    English
    Rights
    All rights reserved
    Resource Type
    Patent
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