Patents by Inventor David Nisius

David Nisius 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: 11660359
    Abstract: Technology is described to uniformly apply doses of radiation to a target material. An irradiation device may comprise an enclosure configured to receive a target material and a source configured to emit primary radiation within the enclosure. The primary radiation may be configured to irradiate at least a first portion of the target material. The irradiation device may further comprise a scattering medium disposed within the enclosure. The scattering medium may be configured to produce secondary radiation through scatter interactions in response to the primary radiation, the secondary radiation configured to irradiate at least a second portion of the target material. A thickness of the scattering medium relative to the primary radiation may have a thickness of at least 3 millimeters).
    Type: Grant
    Filed: April 19, 2021
    Date of Patent: May 30, 2023
    Assignee: Varex Imaging Corporation
    Inventors: Daniel Shedlock, David Nisius, Gregory Andrews, Jeff Adams
  • Publication number: 20220331462
    Abstract: Technology is described to uniformly apply doses of radiation to a target material. An irradiation device may comprise an enclosure configured to receive a target material and a source configured to emit primary radiation within the enclosure. The primary radiation may be configured to irradiate at least a first portion of the target material. The irradiation device may further comprise a scattering medium disposed within the enclosure. The scattering medium may be configured to produce secondary radiation through scatter interactions in response to the primary radiation, the secondary radiation configured to irradiate at least a second portion of the target material. A thickness of the scattering medium relative to the primary radiation may have a thickness of at least 3 millimeters).
    Type: Application
    Filed: April 19, 2021
    Publication date: October 20, 2022
    Applicant: Varex Imaging Corporation
    Inventors: Daniel Shedlock, David Nisius, Gregory Andrews, Jeff Adams
  • Patent number: 9778391
    Abstract: Radiation scanning systems providing multiple views of an object in different planes and a reconstruction algorithm for reconstructing quasi-three-dimensional images from a limited number of views. A system may include bend magnets to direct accelerated charged particles to multiple targets in different viewing locations. Another system collimates radiation generated by a plurality of radiation sources into multiple beams for scanning an object at multiple angles. The object may be a cargo container, for example. The reconstruction algorithm uses an optimization algorithm and imaging and feasibility models to reconstruct quasi-three-dimensional images from the limited number of views.
    Type: Grant
    Filed: March 18, 2014
    Date of Patent: October 3, 2017
    Assignee: VAREX IMAGING CORPORATION
    Inventors: Gongyin Chen, Kevin Holt, Robert E. Drubka, John Stammetti, Michael Z. Duncan, Timothy R. Fox, David Nisius, Martin Hu
  • Publication number: 20140294147
    Abstract: Radiation scanning systems providing multiple views of an object in different planes and a reconstruction algorithm for reconstructing quasi-three-dimensional images from a limited number of views. A system may include bend magnets to direct accelerated charged particles to multiple targets in different viewing locations. Another system collimates radiation generated by a plurality of radiation sources into multiple beams for scanning an object at multiple angles. The object may be a cargo container, for example. The reconstruction algorithm uses an optimization algorithm and imaging and feasibility models to reconstruct quasi-three-dimensional images from the limited number of views.
    Type: Application
    Filed: March 18, 2014
    Publication date: October 2, 2014
    Applicant: Varian Medical Systems, Inc.
    Inventors: Gongyin CHEN, Kevin Holt, Robert E. Drubka, John Stammetti, Michael Z. Duncan, Timothy R. Fox, David Nisius, Martin Hu
  • Patent number: 7813478
    Abstract: One provides (101 and 102) two or more X-ray sources (202 and 204) that are independent and discrete from one another. By one approach, these X-ray sources emit corresponding X-rays (203 and 205) using different voltage levels. In particular, these voltage levels can be sufficiently different from one another to readily permit different elements as comprise an object (201) being examined to be distinguished from one another. These X-rays are then emitted (106) from these sources and towards an object to be examined while causing relative motion (207) between such sources on the one hand and the object on the other.
    Type: Grant
    Filed: February 8, 2007
    Date of Patent: October 12, 2010
    Assignee: Varian Medical Systems, Inc.
    Inventor: David Nisius
  • Publication number: 20080192890
    Abstract: One provides (101 and 102) two or more X-ray sources (202 and 204) that are independent and discrete from one another. By one approach, these X-ray sources emit corresponding X-rays (203 and 205) using different voltage levels. In particular, these voltage levels can be sufficiently different from one another to readily permit different elements as comprise an object (201) being examined to be distinguished from one another. These X-rays are then emitted (106) from these sources and towards an object to be examined while causing relative motion (207) between such sources on the one hand and the object on the other.
    Type: Application
    Filed: February 8, 2007
    Publication date: August 14, 2008
    Applicant: BIO-IMAGING RESEARCH, INC.
    Inventor: David Nisius
  • Publication number: 20050047546
    Abstract: A method and apparatus are provided for extending a dynamic range of an X-ray imaging system. The method includes the steps of detecting a plurality of X-ray beams, amplifying each of the plurality of detected X-ray beams using a first gain value, amplifying each of the plurality of detected X-ray beams using a second gain value, and forming an X-ray image from the detected X-ray beams amplified by the first gain value and from the detected X-ray beams amplified by the second gain value.
    Type: Application
    Filed: August 28, 2003
    Publication date: March 3, 2005
    Inventors: Timothy Fox, David Nisius, Michael Duncan