Patents by Inventor Jiang Hsieh

Jiang Hsieh has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 8364244
    Abstract: Methods and systems for generating computed tomographic (CT) images from image data acquired during different biological cycles are provided. A computer is programmed to receive a plurality of scan data acquired during a gated acquisition window of each of a plurality of biological cycles, blend the scan data acquired during a first of the plurality of biological cycles with the scan data acquired during a second of the plurality of biological cycles, and construct a final image from the blended data.
    Type: Grant
    Filed: November 23, 2005
    Date of Patent: January 29, 2013
    Assignee: General Electric Company
    Inventors: Sandeep Dutta, Jianying Li, John Howard Londt, Melissa L. Vass, Xiangyang Tang, Darin R. Okerlund, Jiang Hsieh
  • Publication number: 20130004050
    Abstract: Approaches for deriving scatter information using inverse tracking of scattered X-rays is disclosed. In certain embodiments scattered rays are tracked from respective locations on a detector to a source of the X-ray radiation, as opposed to tracking schemes that proceed from the source to the detector. In one such approach, the inverse tracking is implemented using a density integrated volume that reduces the integration steps performed.
    Type: Application
    Filed: June 30, 2011
    Publication date: January 3, 2013
    Applicant: General Electric Company
    Inventors: Xiaoye Wu, Jiang Hsieh, Paavana Sainath, Xin Liu
  • Publication number: 20130003912
    Abstract: The subject matter disclosed herein relates to X-ray imaging systems, and more specifically, to multi-energy computed tomography (CT) X-ray imaging systems. In an embodiment, a multi-energy computed tomography (CT) imaging system includes an X-ray source that emits X-rays upon the application of a low stable bias, a high stable bias, and transitional biases between the low stable bias and the high stable bias. The imaging system also includes an X-ray detector configured to produce an electrical signal corresponding to the intensity of the X-rays emitted by the X-ray source that reach the X-ray detector. The imaging system also includes data processing circuitry configured to acquire a first set of data corresponding to the electrical signal produced by the X-ray detector only when the low stable bias or the high stable bias is applied to the X-ray source. The imaging system also includes a processor configured to process the first set of acquired data and construct one or more multi-energy CT images.
    Type: Application
    Filed: June 30, 2011
    Publication date: January 3, 2013
    Applicant: General Electric Company
    Inventors: Bruno Kristiaan Bernard De Man, Jiang Hsieh, Naveen Stephan Chandra, Jiahua Fan, Jed Douglas Pack
  • Publication number: 20120314922
    Abstract: A non-transitory computer readable storage medium having stored thereon a computer program comprising instructions, which when executed by a computer, cause the computer to acquire an image comprising image data reconstructed from an imaging device. The instructions further cause the computer to apply a bloom reduction algorithm to the image configured to iteratively reduce a blooming of high-density objects in the image.
    Type: Application
    Filed: June 9, 2011
    Publication date: December 13, 2012
    Inventors: Jiang Hsieh, Sandeep Dutta
  • Publication number: 20120314928
    Abstract: A system, method, and apparatus includes a computed tomography (CT) system having a rotatable gantry, an x-ray source, a generator, a detector having pixels and positioned to receive x-rays, and a computer. The computer is programmed to acquire CT data representative of an object, determine a first subset of the CT data, determine a second subset of the CT data, and determine a difference between the first and second subsets of the CT data to identify a motion region in the object. The computer is also programmed to update image data reconstructed from a first portion of the first subset of the CT data and corresponding to the region and reconstruct an image based on the updated image data and non-updated image data. The non-updated image data is reconstructed from a second portion the first subset of the CT data.
    Type: Application
    Filed: August 23, 2012
    Publication date: December 13, 2012
    Inventors: Jiang Hsieh, Roy-Arnulf Helge Nilsen, Peter Michael Edic, Bruno Kristiaan Bernard De Man, Jean-Baptiste Thibault, Baojun Li, John Lawrence Seamans
  • Patent number: 8315352
    Abstract: An imaging system includes an x-ray source that emits a beam of x-rays toward an object, a detector that receives high frequency electromagnetic energy attenuated by the object, a data acquisition system (DAS) operably connected to the detector, and a computer operably connected to the DAS. The computer is programmed to compute detector coefficients based on a static low kVp measurement and a static high kVp measurement, capture incident spectra at high and low kVp during fast kVp switching, compute effective X-ray incident spectra at high and low kVp during fast kVp switching using the captured incident spectra, scan a water phantom and normalize the computed detector coefficients to water, adjust the computed effective X-ray incident spectra based on the normalized detector coefficients, compute basis material decomposition functions using the adjusted X-ray incident spectra, and generate one or more basis material density images using the computed basis material decomposition functions.
    Type: Grant
    Filed: September 16, 2010
    Date of Patent: November 20, 2012
    Assignee: General Electric Company
    Inventors: Xiaoye Wu, Dan Xu, Naveen Chandra, Zhanyu Ge, Jiang Hsieh, Daniel David Harrison, Mary Sue Kulpins
  • Patent number: 8315353
    Abstract: A computerized tomographic system configured to acquire short scan data of an object within a single revolution of a detector array about the object over a first angular range of rotation of the detector array about the object, define a temporal subset of the acquired short scan data over a second angular range of rotation of the detector that is less than the first angular range of rotation, generate a mathematical function that is based on the acquired short scan data and the defined temporal subset of data, minimize the mathematical function, and generate an image of the object using the minimized mathematical function and the data acquired over the second angular range of rotation of the detector.
    Type: Grant
    Filed: June 11, 2012
    Date of Patent: November 20, 2012
    Assignee: General Electric Company
    Inventors: Jiang Hsieh, Guang-Hong Chen
  • Publication number: 20120275561
    Abstract: A method for reconstructing an image of an object includes scanning an object using a computed tomographic (CT) imaging apparatus to acquire projections of the object. A set of thresholds are determined utilizing the projections, and selected smoothing kernels are associated with the thresholds. The method further includes utilizing the smoothing kernels and the projections to produce smoothed projections in accordance with the thresholds and filtering and backprojecting the smoothed projections to generate an image of the object.
    Type: Application
    Filed: July 10, 2012
    Publication date: November 1, 2012
    Inventors: Jianying Li, Jiang Hsieh
  • Patent number: 8280137
    Abstract: A system, method, and apparatus includes a computed tomography (CT) system having a rotatable gantry, an x-ray source, a generator, a detector having pixels and positioned to receive x-rays, and a computer. The computer is programmed to acquire CT data representative of an object, determine a first subset of the CT data, determine a second subset of the CT data, and determine a difference between the first and second subsets of the CT data to identify a motion region in the object. The computer is also programmed to update image data reconstructed from a first portion of the first subset of the CT data and corresponding to the region and reconstruct an image based on the updated image data and non-updated image data. The non-updated image data is reconstructed from a second portion the first subset of the CT data.
    Type: Grant
    Filed: December 15, 2009
    Date of Patent: October 2, 2012
    Assignee: General Electric Company
    Inventors: Jiang Hsieh, Roy-Arnulf Helge Nilsen, Peter Michael Edic, Bruno Kristiaan Bernard De Man, Jean-Baptiste Thibault, Baojun Li, John Lawrence Seamans
  • Publication number: 20120243761
    Abstract: A system and method for estimating vascular flow using CT imaging include a computer readable storage medium having stored thereon a computer program comprising instructions, which, when executed by a computer, cause the computer to acquire a first set of data comprising anatomical information of an imaging subject, the anatomical information comprises information of at least one vessel. The instructions further cause the computer to process the anatomical information to generate an image volume comprising the at least one vessel, generate hemodynamic information based on the image volume, and acquire a second set of data of the imaging subject. The computer is also caused to generate an image comprising the hemodynamic information in combination with a visualization based on the second set of data.
    Type: Application
    Filed: March 21, 2012
    Publication date: September 27, 2012
    Inventors: Robert F. Senzig, Ravikanth Avancha, Bijan Dorri, Sandeep Dutta, Steven J. Gray, Jiang Hsieh, John Irvin Jackson, Giridhar Jothiprasad, Paul Edgar Licato, Darin Robert Okerlund, Toshihiro Rifu, Saad Ahmed Sirohey, Basel Taha, Peter Michael Edic, Jerome Knoplioch, Rahul Bhotika
  • Publication number: 20120236984
    Abstract: A CT system includes a rotatable gantry having an opening for receiving an object to be scanned, and a controller. The controller is configured to apply a first kVp for a first time period, apply a second kVp for a second time period, integrate two or more view datasets during the first time period, integrate one or more view datasets during the second time period, and generate an image using the datasets integrated during the first time period and during the second time period.
    Type: Application
    Filed: May 31, 2012
    Publication date: September 20, 2012
    Inventors: Naveen Chandra, Xiaoye Wu, Thomas L. Toth, Jiang Hsieh
  • Patent number: 8233682
    Abstract: 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 form a reconstructed image from the scan data and the calculated projection data.
    Type: Grant
    Filed: June 5, 2007
    Date of Patent: July 31, 2012
    Assignees: General Electric Company, The University of Notre Dame du Lac, The Regents of the University of Michigan, Purdue Research Foundation
    Inventors: Jeffrey Allen Fessler, Charles Addison Bouman, Jiang Hsieh, Jean-Baptiste Daniel Marie Thibault, Ken David Sauer, Samit Kumar Basu, Bruno Kristiaan Bernard De Man
  • Publication number: 20120177173
    Abstract: A method for reducing imaging artifacts includes preprocessing a computed tomography (CT) projection data set to generate preprocessed CT projection data, filtering the preprocessed CT projection data using a mean-preserving filter (MPF) to reduce electronic noise, generating a sinogram using the filtered CT projection data, performing a minus logarithmic operation on the sinogram to generate a noise corrected image, and displaying the noise corrected image on a display. A imaging correcting module and a multi-modality imaging system are also described herein.
    Type: Application
    Filed: January 7, 2011
    Publication date: July 12, 2012
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: DAN XU, JIANG HSIEH, MASATAKE NUKUI, PAAVANA SAINATH
  • Patent number: 8218715
    Abstract: 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.
    Type: Grant
    Filed: May 31, 2007
    Date of Patent: July 10, 2012
    Assignees: General Electric Company, Purdue Research Foundation, The University of Notre Dame du Lac
    Inventors: Ken David Sauer, Charles Addison Bouman, Jiang Hsieh, Jean-Baptiste Thibault
  • Publication number: 20120163557
    Abstract: A method for calibrating a medical imaging system includes performing an initial calibration of the imaging system, at a manufacturing site fabricating the imaging system, using a plurality of phantoms, shipping one of the phantoms to an installation site installing the imaging system, and performing a final calibration, at an installation site of the imaging system, using the shipped phantom. A set of calibration phantoms is also described herein.
    Type: Application
    Filed: December 23, 2010
    Publication date: June 28, 2012
    Inventors: Jiang Hsieh, Naveen Stephan Chandra, Xiaoye Wu, Suresh Narayanan, Dan Xu, Meghan Lynn Yue
  • Patent number: 8204172
    Abstract: A tomographic system includes a gantry having an opening for receiving an object to be scanned, a radiation source, a detector positioned to receive radiation from the source that passes through the object, and a computer programmed to acquire a short scan angular range of data of the object, and define a temporal subset of the acquired short scan angular range of data for image reconstruction, the defined temporal subset of the acquired short scan angular range of data comprising approximately half of the angular range of the short scan angular range of data. The computer is programmed to reconstruct a prior image using the acquired short scan angular range of data, and input an estimated image of the object and the prior image into an objective function and minimize the objective function to reconstruct a refined image using the defined temporal subset of scan data and the prior image.
    Type: Grant
    Filed: November 19, 2010
    Date of Patent: June 19, 2012
    Assignee: General Electric Company
    Inventors: Jiang Hsieh, Guang-Hong Chen
  • Patent number: 8199874
    Abstract: A CT system includes a rotatable gantry having an opening for receiving an object to be scanned, and a controller configured to obtain kVp projection data at a first kVp, obtain kVp projection data at a second kVp, extract data from the kVp projection data obtained at the second kVp, add the extracted data to the kVp projection data obtained at the first kVp to generate mitigated projection data at the first kVp, and generate an image using the mitigated projection data at the first kVp and using the projection data obtained at the second kVp.
    Type: Grant
    Filed: December 11, 2009
    Date of Patent: June 12, 2012
    Assignee: General Electric Company
    Inventors: Thomas L. Toth, Jiang Hsieh, Naveen Chandra, Xiaoye Wu
  • Patent number: 8199875
    Abstract: A CT system includes a rotatable gantry having an opening for receiving an object to be scanned, and a controller configured to apply a first kVp for a first time period, apply a second kVp for a second time period, wherein the second time period is different from the first time period, acquire a first asymmetric view dataset during at least a portion of the first time period, acquire a second asymmetric view dataset during at least a portion of the second time period, and generate an image using the acquired first and second asymmetric view datasets.
    Type: Grant
    Filed: April 15, 2010
    Date of Patent: June 12, 2012
    Assignee: General Electric Company
    Inventors: Naveen Chandra, Xiaoye Wu, Thomas L. Toth, Jiang Hsieh
  • Patent number: 8175115
    Abstract: 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 image quality at a fixed computation time, or both.
    Type: Grant
    Filed: November 17, 2006
    Date of Patent: May 8, 2012
    Assignees: General Electric Company, Purdue Research Foundation, The University of Notre Dame du Lac
    Inventors: Jean-Baptiste Daniel Marie Thibault, Jiang Hsieh, Bruno Kristiaan Bernard De Man, Samit Kumar Basu, Zhou Yu, Charles Addison Bouman, Ken David Sauer
  • Publication number: 20120106816
    Abstract: A system and method for material decomposition optimization in the image domain include a non-transitory computer readable medium has stored thereon a sequence of instructions which, when executed by a computer, causes the computer to access a reconstructed basis material image. For a first voxel of the reconstructed basis material image, the instructions also cause the computer to optimize a concentration of a pair of materials (a,b) in the first voxel exclusively in the image domain and based on a first probability based on random perturbations and a second probability based on random perturbations. The optimization is further based on a third probability based on known materials and a fourth probability based on concentrations of the pair of materials in a pair of voxels neighboring the first voxel.
    Type: Application
    Filed: October 29, 2010
    Publication date: May 3, 2012
    Inventors: BRUNO KRISTIAAN BERNARD De MAN, JIANG HSIEH, NAVEEN CHANDRA, JED DOUGLAS PACK, JIAHUA FAN