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  • Inventor(s):
    Kai Zeng, Charles A. Bouman, Bruno Kristiaan Bernard De Man, Jiang Hsieh, Ken D. Sauer, Jean-Baptiste Thibault, Zhou Yu
    Patent Number:
    US 8655033 B2
    Description:

    An improved iterative reconstruction method to reconstruct a first image includes generating an imaging beam, receiving said imaging beam on a detector array, generating projection data based on said imaging beams received by said detector array, providing said projection data to an image reconstructor, enlarging one of a plurality of voxels and a plurality of detectors of the provided projection data, reconstructing portions of the first image with the plurality of enlarged voxels or detecto…

    Date Issued:
    2014-02-18
    Record Visibility:
    Public
    Resource Type
    Patent
  • Inventor(s):
    Zhou Yu, Bruno Kristiaan Bernard De Man, Jean-Baptiste Thibault, Debashish Pal, Lin Fu, Charles A. Bouman, Ken D. Sauer, Sathish Ramani, Jeffrey Allen Fessler, Somesh Srivastava
    Patent Number:
    US 8885975 B2
    Description:

    A method is provided for reconstructing an image of an object that includes image elements. The method includes accessing measurement data associated with the image elements, introducing an auxiliary variable to transform an original problem of reconstructing the image to a constrained optimization problem, and solving the constrained optimization problem using a method of multipliers to create a sequence of sub-problems and solve the sequence of sub-problems. Solving the sequence of sub-prob…

    Date Issued:
    2014-11-11
    Record Visibility:
    Public
    Resource Type
    Patent
  • Inventor(s):
    Jean-Baptiste Thibault, Jiang Hsieh, Bruno Kristiaan Bernard De Man, Samit Kumar Basu, Zhou Yu, Ken D. Sauer, Charles A. Bouman
    Patent Number:
    US 8175115 B2
    Description:

    A method for reconstructing an image of an object, the image comprising a plurality of image elements, is disclosed. The method includes accessing image data associated with the plurality of image elements, applying a first algorithm to the plurality of image elements, selecting a spatially non-homogenous set of the plurality of image elements, and applying an iterative algorithm to the set of image elements to reduce an amount of time necessary for reconstructing the image, or to improve an …

    Date Issued:
    2012-05-08
    Record Visibility:
    Public
    Resource Type
    Patent
  • 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
    Resource Type
    Patent
  • Inventor(s):
    Jeffrey Allen Fessler, Charles A. Bouman, Jiang Hsieh, Jean-Baptiste Thibault, Ken D. Sauer, Bruno Kristiaan Bernard De Man
    Patent Number:
    US 8233682 B2
    Description:

    A method of improving a resolution of an image using image reconstruction is provided. The method includes acquiring scan data of an object and forward projecting a current image estimate of the scan data to generate calculated projection data. The method also includes applying a data-fit term and a regularization term to the scan data and the calculated projection data and modifying at least one of the data fit term and the regularization term to accommodate spatio-temporal information to fo…

    Date Issued:
    2012-07-31
    Record Visibility:
    Public
    Resource Type
    Patent
  • 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
    Resource Type
    Patent