Patents by Inventor John Howard Londt

John Howard Londt 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).

  • Publication number: 20210153830
    Abstract: Methods and systems are provided for adaptive scan control. In one embodiment, a method includes, upon an injection of a contrast agent, initiating a contrast scan of a subject according to a fallback scan prescription, processing acquired projection data of an anatomical region of interest (ROI) of the subject to measure a contrast signal of the contrast agent, identifying a peak in the contrast signal within a predetermined time frame, if the peak in the contrast signal is not identified within the predetermined time frame, updating the fallback scan prescription to generate an adapted scan prescription for the contrast scan based on the contrast signal, and performing a remainder of the contrast scan according to the adapted scan prescription, and if the peak in the contrast signal is not identified within the predetermined time frame, continuing the remainder of the contrast scan according to the fallback scan prescription.
    Type: Application
    Filed: November 27, 2019
    Publication date: May 27, 2021
    Inventors: Michael Sarju Vaz, Bradley J. Gabrielse, Ryan C. Forbes, John Fusco, David Joseph Pitterle, John Howard Londt, Xiaoqing Guo
  • Patent number: 10638991
    Abstract: A system for imaging a subject with a contrast agent is provided. The system includes an X-ray source, an X-ray detector, and a controller. The X-ray source is operative to transmit X-rays through the subject. The X-ray detector is operative to receive the X-rays after having passed through the subject. The controller is in electronic communication with the X-ray source and the X-ray detector and operative to: generate a target contrast level based at least in part on a contrast adjustment factor; determine when a level of the contrast agent in a first plurality of images of the subject acquired via the X-ray source and the X-ray detector reaches the target contrast level; and acquire a second plurality of images of the subject via the X-ray source and the X-ray detector after the level of the contrast agent has reached the target contrast level.
    Type: Grant
    Filed: September 20, 2018
    Date of Patent: May 5, 2020
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Brian Edward Nett, John Howard Londt
  • Publication number: 20200093451
    Abstract: A system for imaging a subject with a contrast agent is provided. The system includes an X-ray source, an X-ray detector, and a controller. The X-ray source is operative to transmit X-rays through the subject. The X-ray detector is operative to receive the X-rays after having passed through the subject. The controller is in electronic communication with the X-ray source and the X-ray detector and operative to: generate a target contrast level based at least in part on a contrast adjustment factor; determine when a level of the contrast agent in a first plurality of images of the subject acquired via the X-ray source and the X-ray detector reaches the target contrast level; and acquire a second plurality of images of the subject via the X-ray source and the X-ray detector after the level of the contrast agent has reached the target contrast level.
    Type: Application
    Filed: September 20, 2018
    Publication date: March 26, 2020
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: BRIAN EDWARD NETT, JOHN HOWARD LONDT
  • Patent number: 10426424
    Abstract: A computer-implemented method for generating and simulating a computed tomography (CT) protocol is provided. The method includes receiving, via a graphical user interface, at a processor user input including patient population size settings and scan technique settings for modeling the effects of the scan technique settings across a patient population as a function of patient size. The method also includes generating, via the processor, a patient population profile based on at least the patient population size settings and the scan technique settings, wherein the patient population profile includes specific CT scan technique settings to be applied across different size ranges of the patient population as a function of patient size. The method further includes displaying, on the graphical user interface, one or more visualization elements illustrating the effect of these specific CT scan technique settings on specific imaging metrics across the patient population.
    Type: Grant
    Filed: November 21, 2017
    Date of Patent: October 1, 2019
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Dominic Joseph Crotty, Franco Rupcich, John Howard Londt, Mark Vincent Profio, Darin Robert Okerlund, Roy-Arnulf Helge Nilsen
  • Publication number: 20190150872
    Abstract: A computer-implemented method for generating and simulating a computed tomography (CT) protocol is provided. The method includes receiving, via a graphical user interface, at a processor user input including patient population size settings and scan technique settings for modeling the effects of the scan technique settings across a patient population as a function of patient size. The method also includes generating, via the processor, a patient population profile based on at least the patient population size settings and the scan technique settings, wherein the patient population profile includes specific CT scan technique settings to be applied across different size ranges of the patient population as a function of patient size. The method further includes displaying, on the graphical user interface, one or more visualization elements illustrating the effect of these specific CT scan technique settings on specific imaging metrics across the patient population.
    Type: Application
    Filed: November 21, 2017
    Publication date: May 23, 2019
    Inventors: Dominic Joseph Crotty, Franco Rupcich, John Howard Londt, Mark Vincent Profio, Darin Robert Okerlund, Roy-Arnulf Helge Nilsen
  • Patent number: 9622717
    Abstract: Methods and systems are provided that obtain a scan prescription and receive physiologic feature or interest (FOI) measurements of an object of interest during a scan time. The methods and systems further compare at least one of the received physiologic FOI measurements with a predetermined threshold range, and determine a scan setting by evaluating an acquisition rule set based on the physiologic FOI measurement.
    Type: Grant
    Filed: December 18, 2014
    Date of Patent: April 18, 2017
    Assignee: General Electric Company
    Inventors: John Howard Londt, Roy A. Nilsen, Holly Ann McDaniel, Scott D. Slavic, John Irvin Jackson, Elizabeth Nett, Ann Soderman, Victor Eduardo McCormack
  • Publication number: 20160174926
    Abstract: Methods and systems are provided that obtain a scan prescription and receive physiologic feature or interest (FOI) measurements of an object of interest during a scan time. The methods and systems further compare at least one of the received physiologic FOI measurements with a predetermined threshold range, and determine a scan setting by evaluating an acquisition rule set based on the physiologic FOI measurement.
    Type: Application
    Filed: December 18, 2014
    Publication date: June 23, 2016
    Inventors: John Howard Londt, Roy A. Nilsen, Holly Ann McDaniel, Scott D. Slavic, John Irvin Jackson, Elizabeth Nett, Ann Soderman, Victor Eduardo McCormack
  • 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
  • Patent number: 7778385
    Abstract: The present invention is directed to a method and system of controlling rotation of a gantry to rotate at a rotational speed such that a desired relationship between center projection angles of neighboring partial scans is maintained.
    Type: Grant
    Filed: February 16, 2009
    Date of Patent: August 17, 2010
    Assignee: General Electric Company
    Inventors: Jiang Hsieh, Jianying Li, John Howard Londt, Melissa L. Vass, Darin Robert Okerlund, Bernice E. Hoppel
  • Patent number: 7734005
    Abstract: The present invention is directed to a method and system of controlling rotation of a gantry to rotate at a rotational speed such that a desired relationship between center projection angles of neighboring partial scans is maintained.
    Type: Grant
    Filed: October 24, 2007
    Date of Patent: June 8, 2010
    Assignee: General Electric Company
    Inventors: Jiang Hsieh, Jianying Li, John Howard Londt, Melissa L. Vass, Darin Robert Okerlund, Bernice E. Hoppel
  • Patent number: 7613275
    Abstract: A method for combining images acquired using helical half-scan imaging comprises identifying an image plane within an overlap region comprising data from first and second view streams representative of first and second cycles of acquired image data. The image plane comprises the same anatomical structure. First and second weighting functions are calculated for first and second images based on first and second tube positions of an x-ray tube. The first and second images correspond to the image plane and are from the first and second view streams, respectively. The first and second tube positions also correspond to the image plane. A weighted image is then formed based on the first and second weighting functions and the first and second images.
    Type: Grant
    Filed: December 19, 2005
    Date of Patent: November 3, 2009
    Assignee: General Electric Company
    Inventors: Jianying Li, Jiang Hsieh, Melissa L. Vass, Xiangyang Tang, John Howard Londt, Darin Robert Okerlund
  • Patent number: 7558363
    Abstract: A CT imaging system includes a gantry and a table in a movable relationship with the gantry. The CT imaging system also includes a controller configured to control relative movement between a subject disposed on the table and the gantry from a first data acquisition position to a second data acquisition position. The controller is also configured to determine a total scan time based on a first time for acquiring imaging data at the first data acquisition position and a second time for transitioning from the first data acquisition position to the second data acquisition position. The controller is also configured to disable data acquisition in an immediately subsequent cardiac cycle and re-enable data acquisition in the cardiac cycle following the immediately subsequent cardiac cycle if the total scan time exceeds one cardiac cycle of the subject. A method of CT imaging is also disclosed.
    Type: Grant
    Filed: November 16, 2007
    Date of Patent: July 7, 2009
    Assignee: General Electric Company
    Inventors: Jiang Hsieh, Jianying Li, Melissa L. Vass, Xiangyang Tang, Darin Robert Okerlund, Bernice E. Hoppel, Kelly Ann Mohr, John Howard Londt