Patents by Inventor Gregor Adriany

Gregor Adriany 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).

  • Parallel transceiver for nuclear magnetic resonance system
    Patent number: 6969992
    Abstract: An excitation and detection circuit having individually controllable elements for use with a multi-element radio frequency coil. Characteristics of the driving signal, including, for example, the phase, amplitude, frequency and timing, from each element of the circuit is separately controllable using small signals. Negative feedback for the driving signal associated with each coil element is derived from a receiver coupled to that coil element.
    Type: Grant
    Filed: October 4, 2004
    Date of Patent: November 29, 2005
    Assignee: Regents of the University of Minnesota
    Inventors: J. Thomas Vaughan, Gregor Adriany, Kamil Ugurbil, John Strupp, Peter Andersen
  • Assymetric radio frequency transmission line array
    Patent number: 6958607
    Abstract: An apparatus comprises a radio frequency magnetic field unit to generate a desired magnetic field. In one embodiment, the radio frequency magnetic field unit includes a first aperture that is substantially unobstructed and a second aperture contiguous to the first aperture. In an alternative embodiment, the radio frequency magnetic field unit includes a first side aperture, a second side aperture and one or more end apertures. In one embodiment of a method, a current element is removed from a radio frequency magnetic field unit to form a magnetic field unit having an aperture. In an alternative embodiment, two current elements located opposite from one another in a radio frequency magnetic field unit are removed to form a magnetic filed unit having a first side aperture and a second side aperture.
    Type: Grant
    Filed: August 8, 2003
    Date of Patent: October 25, 2005
    Assignee: Regents of the University of Minnesota
    Inventors: J. Thomas Vaughan, Gregor Adriany, Kamil Ugurbil
  • Parallel transceiver for nuclear magnetic resonance system
    Publication number: 20050116715
    Abstract: An excitation and detection circuit having individually controllable elements for use with a multi-element radio frequency coil. Characteristics of the driving signal, including, for example, the phase, amplitude, frequency and timing, from each element of the circuit is separately controllable using small signals. Negative feedback for the driving signal associated with each coil element is derived from a receiver coupled to that coil element.
    Type: Application
    Filed: October 4, 2004
    Publication date: June 2, 2005
    Inventors: J. Vaughan, Gregor Adriany, Kamil Ugurbil, John Strupp, Peter Andersen
  • Radio frequency magnetic field unit with aperature
    Patent number: 6788056
    Abstract: An apparatus comprises a radio frequency magnetic field unit to generate a desired magnetic field. In one embodiment, the radio frequency magnetic field unit includes a first aperture that is substantially unobstructed and a second aperture contiguous to the first aperture. In an alternative embodiment, the radio frequency magnetic field unit includes a first side aperture, a second side aperture and one or more end apertures. In one embodiment of a method, a current element is removed from a radio frequency magnetic field unit to form a magnetic field unit having an aperture. In an alternative embodiment, two current elements located opposite from one another in a radio frequency magnetic field unit are removed to form a magnetic filed unit having a first side aperture and a second side aperture.
    Type: Grant
    Filed: July 31, 2001
    Date of Patent: September 7, 2004
    Assignee: Regents of the University of Minnesota
    Inventors: J. Thomas Vaughan, Gregor Adriany, Kamil Ugurbil
  • Radio frequency magnetic field unit
    Publication number: 20040027128
    Abstract: An apparatus comprises a radio frequency magnetic field unit to generate a desired magnetic field. In one embodiment, the radio frequency magnetic field unit includes a first aperture that is substantially unobstructed and a second aperture contiguous to the first aperture. In an alternative embodiment, the radio frequency magnetic field unit includes a first side aperture, a second side aperture and one or more end apertures. In one embodiment of a method, a current element is removed from a radio frequency magnetic field unit to form a magnetic field unit having an aperture. In an alternative embodiment, two current elements located opposite from one another in a radio frequency magnetic field unit are removed to form a magnetic filed unit having a first side aperture and a second side aperture.
    Type: Application
    Filed: August 8, 2003
    Publication date: February 12, 2004
    Applicant: Regents of the University of Minnesota
    Inventors: J. Thomas Vaughan, Gregor Adriany, Kamil Ugurbil
  • Radio frequency gradient and shim coil
    Publication number: 20040012391
    Abstract: A plurality of linear current elements are configured about a specimen to be imaged. A current in each current element is controlled independent of a current in other current elements to select a gradient and to provide radio frequency shimming. Each current element is driven by a separate channel of a transmitter and connected to a separate channel of a multi-channel receiver. The impedance, and therefore, the current, in each current element is controlled mechanically or electrically.
    Type: Application
    Filed: April 21, 2003
    Publication date: January 22, 2004
    Inventors: J. T. Vaughan, Kamil Ugurbil, Gregor Adriany
  • Radio frequency magnetic field unit
    Publication number: 20020070828
    Abstract: An apparatus comprises a radio frequency magnetic field unit to generate a desired magnetic field. In one embodiment, the radio frequency magnetic field unit includes a first aperture that is substantially unobstructed and a second aperture contiguous to the first aperture. In an alternative embodiment, the radio frequency magnetic field unit includes a first side aperture, a second side aperture and one or more end apertures. In one embodiment of a method, a current element is removed from a radio frequency magnetic field unit to form a magnetic field unit having an aperture. In an alternative embodiment, two current elements located opposite from one another in a radio frequency magnetic field unit are removed to form a magnetic filed unit having a first side aperture and a second side aperture.
    Type: Application
    Filed: July 31, 2001
    Publication date: June 13, 2002
    Inventors: J. Thomas Vaughan, Gregor Adriany, Kamil Ugurbil