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  • Inventor(s):
    Ken D. Sauer, Charles A. Bouman, Jean-Baptiste Thibault, Jiang Hsieh
    Patent Number:
    US 6907102 B2
    Description:

    A multi-slice computed tomography imaging system is provided including a source that generates an x-ray beam and a detector array that receives the x-ray beam and generates projection data. A translatable table has an object thereon and is operable to translate in relation to the source and the detector array. The source and the detector array rotate about the translatable table to helically scan the object. An image reconstructor is electrically coupled to the detector array and reconstructs…

    Date Issued:
    2005-06-14
    Record Visibility:
    Public
    Resource Type
    Patent
  • Inventor(s):
    Ken D. Sauer, Charles A. Bouman, Jiang Hsieh, Jean-Baptiste Thibault
    Patent Number:
    US 7676074 B2
    Description:

    A method for filtering a measurement of density of an object is described. The method includes filtering the measurement of the density and preserving a local average of the measurement and additional measurements when performing the filtering.

    Date Issued:
    2010-03-09
    Record Visibility:
    Public
    Resource Type
    Patent
  • Inventor(s):
    Jiang Hsieh, Charles A. Bouman, Ken D. Sauer, Jean-Baptiste Thibault
    Patent Number:
    US 7440602 B2
    Description:

    A method for improving images of an imaging system including a plurality of detector cells includes assigning a quality factor for each detector cell.

    Date Issued:
    2008-10-21
    Record Visibility:
    Public
    Resource Type
    Patent
  • Inventor(s):
    Ken D. Sauer, Charles A. Bouman, Jiang Hsieh, Jean-Baptiste Thibault
    Patent Number:
    US 7327822 B2
    Description:

    A method of reconstructing an image includes combining a two-dimensional forward projection function and a three-dimensional stabilizing function to generate an iterative reconstruction algorithm, and using the obtained iterative reconstruction algorithm to perform a multislice Computed Tomography (CT) reconstruction to generate an image.

    Date Issued:
    2008-02-05
    Record Visibility:
    Public
    Resource Type
    Patent
  • Inventor(s):
    Jiang Hsieh, Jean-Baptiste Thibault, Ken D. Sauer, Charles A. Bouman
    Patent Number:
    US 7583780 B2
    Description:

    A method for reconstructing an image in a tomographic imaging system is described. The method includes improving a spatial resolution of the image by iteratively reconstructing the image.

    Date Issued:
    2009-09-01
    Record Visibility:
    Public
    Resource Type
    Patent
  • Inventor(s):
    Jean-Baptiste Thibault, Ken D. Sauer, Charles A. Bouman, Jiang Hsieh
    Patent Number:
    US 7272205 B2
    Description:

    A method for calculating an element of a projection includes calculating an element A.sub.i,j of a projection matrix using at least two different rays through a voxel.

    Date Issued:
    2007-09-18
    Record Visibility:
    Public
    Resource Type
    Patent
  • Inventor(s):
    Ken D. Sauer, Jean-Baptiste Thibault, Charles A. Bouman, Jiang Hsieh
    Patent Number:
    US 7251306 B2
    Description:

    A method of reconstructing an image includes performing an iterative CT X-ray image reconstruction using a model including a point spread function (PSF) to reconstruct an image.

    Date Issued:
    2007-07-31
    Record Visibility:
    Public
    Resource Type
    Patent
  • Inventor(s):
    Charles A. Bouman, Ken D. Sauer, Jiang Hsieh, Jean-Baptiste Thibault
    Patent Number:
    US 7308071 B2
    Description:

    A method of reconstructing an image includes substantially minimizing a cost function of the form .times..times..times..times..times..function..function..function. ##EQU00001## where {circumflex over (x)} is the value of x which achieves the minimum summation, y.sub.m is an integral projection, F.sub.m(x) is an forward projection function, and S(x) is a stabilizing function, to obtain {circumflex over (x)}, and using the obtained {circumflex over (x)} to perform a multislice Computed Tomograp…

    Date Issued:
    2007-12-11
    Record Visibility:
    Public
    Resource Type
    Patent
  • Inventor(s):
    Ken D. Sauer, Charles A. Bouman, Jiang Hsieh, Jean-Baptiste Thibault
    Patent Number:
    US 8218715 B2
    Description:

    Methods and systems for reconstructing an image are provided. The method includes performing a tomographic image reconstruction using a joint estimation of at least one of a gain parameter and an offset parameter, and an estimation of the reconstructed image.

    Date Issued:
    2012-07-10
    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
  • 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
    Resource Type
    Patent
  • 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