Patents by Inventor John Yorkston

John Yorkston 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: 10307115
    Abstract: A system for cone beam computed tomography of an extremity has an x-ray source and a digital radiographic detector both revolved about a central imaging axis so that the detector moves at least partially around a first extremity of a patient and, if the extremity is the leg of the patient, the detector moves between the legs of the patient. The detector path has a radial distance less than that of the source path. A housing that encloses the source and detector includes a pivoting door to allow sideways access for the patient's leg to be placed at the central imaging axis.
    Type: Grant
    Filed: June 14, 2018
    Date of Patent: June 4, 2019
    Assignee: Carestream Health, Inc.
    Inventors: John Yorkston, Robert J. Asento, Jeffrey H. Siewerdsen, David H. Foos
  • Patent number: 10307123
    Abstract: An imaging method, accesses cone beam computed tomography (CBCT) data and displays, on a display monitor, at least one view of the CBCT data. The method provides an interface for a user to indicate a tomosynthesis reconstruction plane on the displayed view of the CBCT data; and displays a tomosynthesis image on the display monitor according to the indicated tomosynthesis reconstruction plane.
    Type: Grant
    Filed: November 14, 2016
    Date of Patent: June 4, 2019
    Assignee: Carestream Health, Inc.
    Inventors: Nathan J. Packard, John Yorkston, Richard A. Simon, Levon O. Vogelsang, Robert A. Senn
  • Patent number: 10136871
    Abstract: An apparatus captures radiographic images of an animal standing on the apparatus. A base portion supports the standing animal and a moveable x-ray source is mechanically attached to the base portion. A digital radiographic detector is also mechanically attached to the base portion, and the x-ray source and the detector are configured to capture a radiographic image or a scan of at least one of the legs of the animal.
    Type: Grant
    Filed: October 9, 2014
    Date of Patent: November 27, 2018
    Assignee: Carestream Health, Inc.
    Inventors: John Yorkston, William C. Wendlandt, Peter A. Newman, Carl R. Wesolowski, Douglas M. Csaszar, Craig F. Hofmann, Donna K. Rankin-Parobek
  • Publication number: 20180296172
    Abstract: A system for cone beam computed tomography of an extremity has an x-ray source and a digital radiographic detector both revolved about a central imaging axis so that the detector moves at least partially around a first extremity of a patient and, if the extremity is the leg of the patient, the detector moves between the legs of the patient. The detector path has a radial distance less than that of the source path. A housing that encloses the source and detector includes a pivoting door to allow sideways access for the patient's leg to be placed at the central imaging axis.
    Type: Application
    Filed: June 14, 2018
    Publication date: October 18, 2018
    Inventors: John YORKSTON, Robert J. ASENTO, Jeffrey H. SIEWERDSEN, David H. FOOS
  • Publication number: 20180289345
    Abstract: A mobile radiography apparatus has a moveable (e.g., wheeled) transport frame and an adjustable column mounted at the frame. A boom apparatus supported by the adjustable column can support an x-ray source assembly. Radiation or X-ray source assembly methods and/or apparatus embodiments can provide mobile radiography carts a capability to direct x-ray radiation towards a subject from one or a plurality of different source positions, where the X-ray source assembly includes a first x-ray power source and a second plurality of distributed x-ray sources disposed in a prescribed spatial relationship.
    Type: Application
    Filed: June 8, 2018
    Publication date: October 11, 2018
    Inventors: David H. FOOS, John YORKSTON, Xiaohui WANG
  • Patent number: 10092256
    Abstract: Embodiments of methods and/or apparatus for a radiographic imaging can include a plurality of x-ray sources disposed in a curve and a detector configured to revolve relative thereto. In one embodiment, a CBCT imaging method and/or apparatus can include performing a first scan at a first speed using stationary angularly distributed x-ray sources to acquire first CBCT projection data that impinge a detector of a first field of view (FOV), identifying an area of interest within the first FOV, and performing a second scan at a second speed using the x-ray sources acquire second CBCT projection data that impinge a portion of the detector of a second smaller FOV including the area of interest within the first FOV using second emissions by the x-ray sources, where the second speed is greater than the first speed.
    Type: Grant
    Filed: May 17, 2013
    Date of Patent: October 9, 2018
    Assignee: Carestream Health, Inc.
    Inventors: John Yorkston, David H. Foos
  • Patent number: 10076293
    Abstract: A method for defining the shape of a radiation beam that is directed toward a subject and to a free-standing imaging detector detects the position and orientation of the imaging detector relative to a radiation source, then adjusts an aperture that lies in the path of the radiation beam to shape the beam for incidence on a predetermined area of the detector according to the detected imaging detector position. The radiation source is energized to emit the shaped radiation beam and the image data about the subject is acquired from the imaging detector.
    Type: Grant
    Filed: October 1, 2013
    Date of Patent: September 18, 2018
    Assignee: Carestream Health, Inc.
    Inventors: William J. Sehnert, Samuel Richard, John Yorkston, Xiaohui Wang
  • Patent number: 10016173
    Abstract: A mobile radiography apparatus has a moveable (e.g., wheeled) transport frame and an adjustable column mounted at the frame. A boom apparatus supported by the adjustable column can support an x-ray source assembly. Radiation or X-ray source assembly methods and/or apparatus embodiments can provide mobile radiography carts a capability to direct x-ray radiation towards a subject from one or a plurality of different source positions, where the X-ray source assembly includes a first x-ray power source and a second plurality of distributed x-ray sources disposed in a prescribed spatial relationship.
    Type: Grant
    Filed: January 4, 2018
    Date of Patent: July 10, 2018
    Assignee: Carestream Health, Inc.
    Inventors: David H. Foos, John Yorkston, Xiaohui Wang
  • Patent number: 10010295
    Abstract: An apparatus for cone beam computed tomography of an extremity has a digital radiation detector and a first device to move the detector along a circular detector path extending so that the detector moves both at least partially around a first extremity of the patient and between the first extremity and a second, adjacent extremity. The detector path has radius R1 sufficient to position the extremity approximately centered in the detector path. There is a radiation source with a second device to move the source along a concentric circular source path having a radius R2 greater than radius R1, radius R2 sufficiently long to allow adequate radiation exposure of the first extremity for an image capture by the detector. A first circumferential gap in the source path allows the second extremity to be positioned in the first circumferential gap during image capture.
    Type: Grant
    Filed: February 6, 2017
    Date of Patent: July 3, 2018
    Inventors: John Yorkston, Robert J. Asento, Jeffrey H. Siewerdsen, David H. Foos
  • Publication number: 20180140266
    Abstract: A mobile radiography apparatus has a moveable (e.g., wheeled) transport frame and an adjustable column mounted at the frame. A boom apparatus supported by the adjustable column can support an x-ray source assembly. Radiation or X-ray source assembly methods and/or apparatus embodiments can provide mobile radiography carts a capability to direct x-ray radiation towards a subject from one or a plurality of different source positions, where the X-ray source assembly includes a first x-ray power source and a second plurality of distributed x-ray sources disposed in a prescribed spatial relationship.
    Type: Application
    Filed: January 4, 2018
    Publication date: May 24, 2018
    Inventors: David H. FOOS, John YORKSTON, Xiaohui WANG
  • Patent number: 9907516
    Abstract: An apparatus for cone beam computed tomography can include a support structure, a scanner assembly coupled to the support structure for controlled movement in at least x, y and z orientations, the scanner assembly can include a DR detector configured to move along at least a portion of a detector path that extends at least partially around a scan volume with a distance D1 that is sufficiently long to allow the scan volume to be positioned within the detector path; a radiation source configured to move along at least a portion of a source path outside the detector path, the source path having a distance D2 greater than the distance D1, the distance D2 being sufficiently long to allow adequate radiation exposure of the scan volume for an image capture by the detector; and a first gap in the detector path.
    Type: Grant
    Filed: October 7, 2013
    Date of Patent: March 6, 2018
    Assignees: Carestream Health, Inc., The Johns Hopkins University
    Inventors: Michael A. Litzenberger, Peter A. Newman, John Yorkston, Andrew J. Hartmann, Jeffrey H. Siewerdsen, Douglas M. Csaszar
  • Publication number: 20180028127
    Abstract: An apparatus for cone beam computed tomography can include a support structure, a scanner assembly coupled to the support structure for controlled movement in at least x, y and z orientations, the scanner assembly can include a DR detector configured to move along at least a portion of a detector path that extends at least partially around a scan volume with a distance D1 that is sufficiently long to allow the scan volume to be positioned within the detector path; a radiation source configured to move along at least a portion of a source path outside the detector path, the source path having a distance D2 greater than the distance D1, the distance D2 being sufficiently long to allow adequate radiation exposure of the scan volume for an image capture by the detector; and a first gap in the detector path.
    Type: Application
    Filed: August 21, 2017
    Publication date: February 1, 2018
    Inventors: Michael A. Litzenberger, Peter A. Newman, John Yorkston, Andrew J. Hartmann, Jeffrey H. Siewerdsen, Douglas M. Csaszar
  • Patent number: 9808211
    Abstract: A CBCT imaging system comprises a digital radiation detector and radiation source. A detector transport moves the detector along at least a portion of a first curved path and a radiation source transport moves the radiation source along at least a portion of a second curved source path. The detector is configured to travel at least a portion of the first curved path, and the radiation source is configured to travel at least a portion of the second curved path. The detector is configured to obtain a plurality of 2D projection images over a range of scan angles for reconstructing a 3D volume image using the plurality 2D projection images.
    Type: Grant
    Filed: November 10, 2014
    Date of Patent: November 7, 2017
    Assignee: Carestream Health, Inc.
    Inventors: John Yorkston, William C. Wendlandt, Peter A. Newman, Donna K. Rankin-Parobek, David Y. Chan
  • Patent number: 9770214
    Abstract: An apparatus for cone beam computed tomography of an extremity has a digital radiation detector and a first device to move the detector along a circular detector path extending so that the detector moves both at least partially around a first extremity of the patient and between the first extremity and a second, adjacent extremity. The detector path has radius R1 sufficient to position the extremity approximately centered in the detector path. There is a radiation source with a second device to move the source along a concentric circular source path having a radius R2 greater than radius R1, radius R2 sufficiently long to allow adequate radiation exposure of the first extremity for an image capture by the detector. A first circumferential gap in the source path allows the second extremity to be positioned in the first circumferential gap during image capture.
    Type: Grant
    Filed: February 7, 2017
    Date of Patent: September 26, 2017
    Inventors: John Yorkston, Robert J. Asento, Jeffrey H. Siewerdsen, David H. Foos
  • Publication number: 20170156683
    Abstract: An apparatus for cone beam computed tomography of an extremity has a digital radiation detector and a first device to move the detector along a circular detector path extending so that the detector moves both at least partially around a first extremity of the patient and between the first extremity and a second, adjacent extremity. The detector path has radius R1 sufficient to position the extremity approximately centered in the detector path. There is a radiation source with a second device to move the source along a concentric circular source path having a radius R2 greater than radius R1, radius R2 sufficiently long to allow adequate radiation exposure of the first extremity for an image capture by the detector. A first circumferential gap in the source path allows the second extremity to be positioned in the first circumferential gap during image capture.
    Type: Application
    Filed: February 7, 2017
    Publication date: June 8, 2017
    Inventors: John Yorkston, Robert J. Asento, Jeffrey H. Siewerdsen, David H. Foos
  • Publication number: 20170143288
    Abstract: An imaging method, accesses cone beam computed tomography (CBCT) data and displays, on a display monitor, at least one view of the CBCT data. The method provides an interface for a user to indicate a tomosynthesis reconstruction plane on the displayed view of the CBCT data; and displays a tomosynthesis image on the display monitor according to the indicated tomosynthesis reconstruction plane.
    Type: Application
    Filed: November 14, 2016
    Publication date: May 25, 2017
    Inventors: Nathan J. Packard, John Yorkston, Richard A. Simon, Levon O. Vogelsang, Robert A. Senn
  • Publication number: 20170143285
    Abstract: An apparatus for cone beam computed tomography of an extremity has a digital radiation detector and a first device to move the detector along a circular detector path extending so that the detector moves both at least partially around a first extremity of the patient and between the first extremity and a second, adjacent extremity. The detector path has radius R1 sufficient to position the extremity approximately centered in the detector path. There is a radiation source with a second device to move the source along a concentric circular source path having a radius R2 greater than radius R1, radius R2 sufficiently long to allow adequate radiation exposure of the first extremity for an image capture by the detector. A first circumferential gap in the source path allows the second extremity to be positioned in the first circumferential gap during image capture.
    Type: Application
    Filed: February 6, 2017
    Publication date: May 25, 2017
    Inventors: John Yorkston, Robert J. Asento, Jeffrey H. Siewerdsen, David H. Foos
  • Patent number: 9649074
    Abstract: A mobile radiography apparatus has a moveable (e.g., wheeled) transport frame and an adjustable column mounted at the frame. A boom apparatus supported by the adjustable column can support an x-ray source assembly. Certain exemplary methods and/or apparatus embodiments can provide mobile radiography carts a capability to direct x-ray radiation towards a subject from one or a plurality of different source positions, and reconstruct two-dimensional or three-dimensional tomosynthesis images where an imaging geometry of x-ray source positions to a radiographic detection array is not known for a plurality of x-ray tomosynthesis projection images. In one embodiment, an imaging geometry and tomosynthesis reconstruction(s) can be simultaneously determined by iteratively determining a current imaging geometry while iteratively monitoring a metric (e.g., stopping criterion) that approaches a prescribed or desired value associated with the tomosynthesis reconstruction.
    Type: Grant
    Filed: November 19, 2013
    Date of Patent: May 16, 2017
    Assignee: Carstream Health, Inc.
    Inventors: Richard A. Simon, David H. Foos, John Yorkston, Xiaohui Wang
  • Patent number: 9597044
    Abstract: An apparatus for cone beam computed tomography of an extremity has a digital radiation detector and a first device to move the detector along a circular detector path extending so that the detector moves both at least partially around a first extremity of the patient and between the first extremity and a second, adjacent extremity. The detector path has radius R1 sufficient to position the extremity approximately centered in the detector path. There is a radiation source with a second device to move the source along a concentric circular source path having a radius R2 greater than radius R1, radius R2 sufficiently long to allow adequate radiation exposure of the first extremity for an image capture by the detector. A first circumferential gap in the source path allows the second extremity to be positioned in the first circumferential gap during image capture.
    Type: Grant
    Filed: February 2, 2016
    Date of Patent: March 21, 2017
    Assignee: Carestream Health, Inc.
    Inventors: John Yorkston, Robert J. Asento, Jeffrey H. Siewerdsen, David H. Foos
  • Publication number: 20160262709
    Abstract: The present invention is directed to a system and method for dual-energy (DE) or multiple-energy (spectral) cone-beam computed tomography (CBCT) using a configuration of multiple x-ray sources and a single detector. The x-ray sources are operated to produce x-ray spectra of different energies (peak kilovoltage (kVp) and/or filtration). Volumetric 3D image reconstruction and dual or triple energy 3D image decomposition can be executed using data from the CBCT scan. The invention allows for a variety of selections in energy and filtration associated with each source and the order of pulsing for each source (“firing pattern”). The motivation for distributing the sources along the z direction in CBCT includes extension of the longitudinal field of view and reduction of cone-beam artifacts.
    Type: Application
    Filed: November 25, 2014
    Publication date: September 15, 2016
    Applicants: The Johns Hopkins University, Carestream Health, Inc.
    Inventors: Jeffrey H. Siewerdsen, J. Webster Stayman, Wojciech Zbijewski, John Yorkston