Patents by Inventor Jiahua Fan

Jiahua Fan 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: 11145055
    Abstract: Systems, apparatus, methods, and computer-readable storage media to estimate scatter in an image are disclosed. An example apparatus includes a network generator to generate and train an inception neural network using first and second input to deploy an inception neural network model to process image data when first and second outputs of the inception neural network converge, the first input based on a raw sinogram of a first image and the second input based on an attenuation-corrected sinogram of the first image, the inception neural network including a first filter of a first size and a second filter of a second size in a layer to process the first input and/or the second input to generate an estimate of scatter in the first image. The example apparatus also includes an image processor to apply the estimate of scatter to a second image to generate a processed image.
    Type: Grant
    Filed: July 31, 2019
    Date of Patent: October 12, 2021
    Assignee: GE PRECISION HEALTHCARE LLC
    Inventors: Xiao Jin, Jiahua Fan, Scott David Wollenweber
  • Publication number: 20210212656
    Abstract: Various methods and systems are provided for spectral computed tomography (CT) imaging. In one embodiment, a method comprises performing a scan of a subject to acquire, with a detector array comprising a plurality of detector elements, projection data of the subject, generating corrected path-length estimates based on the projection data and one or more selected correction functions, and reconstructing at least one material density image based on the corrected path-length estimates. In this way, the fidelity of spectral information is improved, thereby increasing image quality for spectral computed tomography (CT) imaging systems, especially those configured with photon-counting detectors.
    Type: Application
    Filed: January 13, 2020
    Publication date: July 15, 2021
    Inventors: Jiahua Fan, Matthew Getzin, Sathish Ramani, Peter Edic
  • Patent number: 10973489
    Abstract: Computed tomography (CT) imaging system has at least one processing unit configured to receive operator inputs that include a modified system feature and a clinical task having a task object and also receive operator inputs for determining a task-based image quality (IQ) metric. The task-based IQ metric represents a desired overall image quality of image data for performing the clinical task. The image data acquired using a reference system feature. The at least one processing unit is also configured to determine an exposure-control parameter based on the task object, the modified system feature, and the task-based IQ metric. The at least one processing unit is also configured to direct the x-ray source to generate the x-ray beam during the CT scan, wherein at least one of the tube current or the tube potential during the CT scan is a function of the exposure-control parameter.
    Type: Grant
    Filed: June 27, 2018
    Date of Patent: April 13, 2021
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Franco Rupcich, Dominic Crotty, Jiahua Fan, Parag Khobragade, Tal Gilat Schmidt
  • Patent number: 10893839
    Abstract: A computed tomography (CT) imaging system and method, wherein the system includes an x-ray source that is operable to emit a beam of x-rays from a focal spot and move a spot position of the focal spot. The system also includes a detector assembly that is configured to detect the x-rays attenuated by the object. At least one processing unit is configured to execute programmed instructions stored in memory. The at least one processing unit is configured to direct the x-ray source to emit different beams of the x-rays at different energy levels and to receive data from the detector assembly that are representative of detection of the x-rays emitted at the different energy levels. The at least one processing unit is also configured to direct the x-ray source to move the focal spot such that the focal spot is at different spot positions while the different beams are emitted.
    Type: Grant
    Filed: June 6, 2018
    Date of Patent: January 19, 2021
    Assignee: General Electric Company
    Inventors: Jiahua Fan, Yannan Jin, Ming Yan, Uwe Wiedmann
  • Publication number: 20200359987
    Abstract: Methods and systems are provided for dual energy imaging. In one embodiment, a method for a dual energy imaging system comprises determining a first tube potential and a second tube potential according to a size of a subject, and controlling the dual energy imaging system with the first tube potential and the second tube potential to generate lower energy x-rays and higher energy x-rays respectively to image the subject. In this way, image quality may be increased while minimizing dose during dual energy imaging of a particular imaging subject.
    Type: Application
    Filed: May 17, 2019
    Publication date: November 19, 2020
    Inventors: Jiahua Fan, Zhoubo Li, Mingye Wu, Ryan Lemminger, Priti Madhav, Rajeshwari Karthikeyan
  • Patent number: 10719961
    Abstract: A method is provided that includes acquiring initial PET imaging data. The method also includes acquiring CT imaging data. Further, the method includes training a deep learning model for PET image reconstruction using the initial PET imaging data and the CT imaging data.
    Type: Grant
    Filed: July 24, 2018
    Date of Patent: July 21, 2020
    Assignee: General Electric Company
    Inventors: Xiao Jin, Xue Rui, Jiahua Fan
  • Publication number: 20200134883
    Abstract: Methods and systems are provided for reconstructing images with a tailored image texture. In one embodiment, a method comprises acquiring projection data, and reconstructing an image from the projection data with a desired image texture. In this way, iterative image reconstruction techniques may be used to substantially reduce image noise, thereby enabling a reduction in injected contrast and/or radiation dose, while preserving an image texture familiar from analytic image reconstruction techniques.
    Type: Application
    Filed: October 31, 2018
    Publication date: April 30, 2020
    Inventors: Brian Edward Nett, Jiahua Fan, Amber Christine Silvaggio
  • Patent number: 10610173
    Abstract: The present approach relates to avoiding azimuthal blur in a computed tomography context, such as in dual energy imaging with fast kV switching. In accordance with certain aspects, the focal spot position is held stationary in the patient coordinate system within each respective view and the detector signals within the view are summed. In one embodiment, this results in the low and high energy views within the signal being collected from the same position within the patient coordinate system.
    Type: Grant
    Filed: January 16, 2018
    Date of Patent: April 7, 2020
    Assignee: General Electric Company
    Inventors: Yannan Jin, Jiahua Fan, Mingye Wu, Feng Chen, Bruno Kristiaan Bernard De Man
  • Patent number: 10595808
    Abstract: An imaging system includes a computer programmed to estimate noise in computed tomography (CT) imaging data, correlate the noise estimation with neighboring CT imaging data to generate a weighting estimation based on the correlation, de-noise the CT imaging data based on the noise estimation and on the weighting, and reconstruct an image using the de-noised CT imaging data.
    Type: Grant
    Filed: June 29, 2016
    Date of Patent: March 24, 2020
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Jiahua Fan, Meghan Lynn Yue, Jiang Hsieh, Roman Melnyk, Masatake Nukui, Yujiro Yazaki
  • Patent number: 10555707
    Abstract: A patient support system includes a support beam that may translocate along an axial axis of a medical imaging system. At least a portion of the support beam may be disposed within a central bore of the medical imaging system. The patient support system also includes a patient support removably coupled to the support beam and including a backing that may support a patient during an imaging procedure and a restraint extending a longitudinal length of the backing. The restraint includes a first end coupled to the backing and a second end that may be removably coupled to the support beam, and the restraint may secure the patient support to the support beam and to restrain the patient within the patient support.
    Type: Grant
    Filed: November 22, 2016
    Date of Patent: February 11, 2020
    Assignee: GENERAL ELECTRIC COMPAMNY
    Inventors: Adam Israel Cohen, Douglas Grant, Joshua Lamb, Johanna Sumner, Jiahua Fan, Adam Pautsch, John Moore Boudry
  • Publication number: 20200043163
    Abstract: Systems, apparatus, methods, and computer-readable storage media to estimate scatter in an image are disclosed. An example apparatus includes a network generator to generate and train an inception neural network using first and second input to deploy an inception neural network model to process image data when first and second outputs of the inception neural network converge, the first input based on a raw sinogram of a first image and the second input based on an attenuation-corrected sinogram of the first image, the inception neural network including a first filter of a first size and a second filter of a second size in a layer to process the first input and/or the second input to generate an estimate of scatter in the first image. The example apparatus also includes an image processor to apply the estimate of scatter to a second image to generate a processed image.
    Type: Application
    Filed: July 31, 2019
    Publication date: February 6, 2020
    Inventors: Xiao Jin, Jiahua Fan, Scott David Wollenweber
  • Publication number: 20190374174
    Abstract: A computed tomography (CT) imaging system and method, wherein the system includes an x-ray source that is operable to emit a beam of x-rays from a focal spot and move a spot position of the focal spot. The system also includes a detector assembly that is configured to detect the x-rays attenuated by the object. At least one processing unit is configured to execute programmed instructions stored in memory. The at least one processing unit is configured to direct the x-ray source to emit different beams of the x-rays at different energy levels and to receive data from the detector assembly that are representative of detection of the x-rays emitted at the different energy levels. The at least one processing unit is also configured to direct the x-ray source to move the focal spot such that the focal spot is at different spot positions while the different beams are emitted.
    Type: Application
    Filed: June 6, 2018
    Publication date: December 12, 2019
    Inventors: Jiahua Fan, Yannan Jin, Ming Yan, Uwe Wiedmann
  • Publication number: 20190340793
    Abstract: A method is provided that includes acquiring initial PET imaging data. The method also includes acquiring CT imaging data. Further, the method includes training a deep learning model for PET image reconstruction using the initial PET imaging data and the CT imaging data.
    Type: Application
    Filed: July 24, 2018
    Publication date: November 7, 2019
    Inventors: Xiao Jin, Xue Rui, Jiahua Fan
  • Patent number: 10368825
    Abstract: Methods and systems are provided for automatic exposure control in computed tomography imaging systems. In one embodiment, a method comprises in response to an object-specific dose metric input by a user via a user interface operably coupled to a scanner, predicting an image quality of a diagnostic scan, calculating an output level of a source of the scanner for the image quality, and performing the diagnostic scan at the output level when the image quality is higher than a threshold. In this way, patient-specific image quality settings may be determined.
    Type: Grant
    Filed: January 20, 2016
    Date of Patent: August 6, 2019
    Assignee: General Electric Company
    Inventors: Dominic Joseph Crotty, Roy A. Nilsen, Jiahua Fan, Mary Sue Kulpins, Franco Rupcich, Grant Morey Stevens
  • Publication number: 20190216413
    Abstract: The present approach relates to avoiding azimuthal blur in a computed tomography context, such as in dual energy imaging with fast kV switching. In accordance with certain aspects, the focal spot position is held stationary in the patient coordinate system within each respective view and the detector signals within the view are summed. In one embodiment, this results in the low and high energy views within the signal being collected from the same position within the patient coordinate system.
    Type: Application
    Filed: January 16, 2018
    Publication date: July 18, 2019
    Inventors: Yannan Jin, Jiahua Fan, Mingye Wu, Feng Chen, Bruno Kristiaan Bernard De Man
  • Publication number: 20190142357
    Abstract: Methods and systems are provided for improving image quality with three-dimensional (3D) scout scans for computed tomography (CT) imaging. In one embodiment, a method comprises reconstructing an image from projection data acquired during a diagnostic scan of a patient with corrections based on scout projection data acquired during a 3D scout scan of the patient. In this way, the image quality of a diagnostic image can be improved by using 3D scout data to correct projection data or image data.
    Type: Application
    Filed: November 14, 2017
    Publication date: May 16, 2019
    Inventors: Jiahua Fan, Yannan Jin, Dominic Crotty, John Moore Boudry
  • Patent number: 10290460
    Abstract: An X-ray tube is provided. The X-ray tube includes an electron beam source including a cathode configured to emit an electron beam. The X-ray tube also includes an anode assembly including an anode configured to receive the electron beam and to emit X-rays when impacted by the electron beam. The X-ray tube further includes a gridding electrode disposed about a path of the electron beam between the electron beam source and the anode assembly. The gridding electrode, when powered at a specific level, is configured to grid the electron beam in synchronization with planned transitions during a dynamic focal spot mode.
    Type: Grant
    Filed: September 7, 2016
    Date of Patent: May 14, 2019
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Michael John Utschig, Uwe Wiedmann, Bruno Kristiaan Bernard De Man, Sergio Lemaitre, Mark Alan Frontera, Antonio Caiafa, Jiahua Fan, Adam Budde
  • Publication number: 20190099148
    Abstract: Computed tomography (CT) imaging system has at least one processing unit configured to receive operator inputs that include a modified system feature and a clinical task having a task object and also receive operator inputs for determining a task-based image quality (IQ) metric. The task-based IQ metric represents a desired overall image quality of image data for performing the clinical task. The image data acquired using a reference system feature. The at least one processing unit is also configured to determine an exposure-control parameter based on the task object, the modified system feature, and the task-based IQ metric. The at least one processing unit is also configured to direct the x-ray source to generate the x-ray beam during the CT scan, wherein at least one of the tube current or the tube potential during the CT scan is a function of the exposure-control parameter.
    Type: Application
    Filed: June 27, 2018
    Publication date: April 4, 2019
    Inventors: Franco Rupcich, Dominic Crotty, Jiahua Fan, Parag Khobragade, Tal Gilat Schmidt
  • Patent number: 10165996
    Abstract: An imaging system includes a computed tomography (CT) acquisition unit and a processing unit. The CT acquisition unit includes an X-ray source and a CT detector. The processing unit is configured to determine a voltage delivery configuration for the X-ray source based on at least one of a patient size, a clinical task, or scan parameters. The voltage delivery configuration includes at least one of a transition configuration or a voltage threshold. The transition configuration corresponds to a transition between a high voltage and a low voltage. Portions of acquired data acquired above the voltage threshold are grouped as high energy data and portions acquired below the voltage threshold are grouped as low energy data. The processing unit is also configured to implement the voltage delivery configuration on the CT acquisition unit, and to control the CT acquisition unit to perform an imaging scan using the determined voltage delivery configuration.
    Type: Grant
    Filed: September 30, 2015
    Date of Patent: January 1, 2019
    Assignee: General Electric Company
    Inventors: Priti Madhav, Uwe Wiedmann, Eric Biehr, Jiahua Fan, Jean-Francois Larroux, Vijay Subramanian
  • Patent number: 10085698
    Abstract: Methods and systems are provided for automated tube current modulation (ATCM). In one embodiment, a method for an imaging system comprises: calculating a desired dose level based on a clinical task, a size of a subject to be scanned, and an image quality level; generating a scan protocol based on a relation between the image quality level and at least one characteristic of the imaging system; and performing a scan of the subject at the desired dose level and according to the generated scan protocol. In this way, ATCM can be optimized based on elements that impact image quality such as the clinical task, the physical characteristics of the imaging system, the individual patient, and the reader's preference.
    Type: Grant
    Filed: January 26, 2016
    Date of Patent: October 2, 2018
    Assignee: Genereal Electric Company
    Inventors: Jiahua Fan, Xiaoyu Tian, Dominic Joseph Crotty