Patents by Inventor Nora T. Tgavalekos

Nora T. Tgavalekos 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: 9055883
    Abstract: A surgical navigation system including an ultrasound catheter is disclosed herein. The ultrasound catheter includes a flexible catheter housing defining a distal end, a transducer array disposed at least partially within the catheter housing, and a motor coupled with the transducer array. The motor is configured to rotate the transducer array in order to image a three-dimensional volume. The ultrasound catheter also includes a tracking element adapted to provide an estimate of a position and/or orientation of the distal end of the catheter housing. The tracking element is disposed within the catheter housing and immediately adjacent to the distal end.
    Type: Grant
    Filed: November 6, 2007
    Date of Patent: June 16, 2015
    Assignee: General Electric Company
    Inventors: Nora T. Tgavalekos, Dun Alex Li, Peter Traneus Anderson, Jonathan David Schiff
  • Patent number: 8468111
    Abstract: The technology described herein includes a system and/or a method for determining confidence of object identification. The technology includes selecting at least one confidence rule from a plurality of confidence rules based on a first discrimination identification and a second discrimination identification. The technology further includes generating an object confidence weight based on one or more first identification parameters, one or more second identification parameters, and the selected at least one confidence rule. The technology further includes fusing the received set of data based on an alpha parameter, a beta parameter, and the object confidence weight. The technology further includes generating a probability of identification of a classification of the object based on the fused data.
    Type: Grant
    Filed: November 30, 2010
    Date of Patent: June 18, 2013
    Assignee: Raytheon Company
    Inventors: Nora T. Tgavalekos, Brian J. Scannell, Elizabeth M. Begin, George C. Adams, Samuel H. Rosenthal, Seanna J. Gittler, Eric Scheid, Arthur B. Johnson, Kenric P. Nelson
  • Patent number: 8260052
    Abstract: The technology described herein includes a system and/or a method for identifying an object. The technology includes determining an alpha parameter that is associated with a fusion function. The technology includes determining a beta parameter that is associated with a degree of expected independence of a received set of data and the received set of data including information associated with a classification of the object. The technology includes fusing the received set of data based on the alpha parameter and the beta parameter. The technology includes generating a probability of identification of the classification of the object based on the fused data.
    Type: Grant
    Filed: November 30, 2010
    Date of Patent: September 4, 2012
    Assignee: Raytheon Company
    Inventors: Brian J. Scannell, Kenric P. Nelson, Nora T. Tgavalekos, Ethan Phelps
  • Patent number: 7909767
    Abstract: A method for minimizing tracking system interference caused by a motor driven ultrasonic imaging device is disclosed herein. The method includes providing an ultrasonic imaging device adapted to obtain a generally real time three-dimensional image. The ultrasonic imaging device includes a motor configured to rotate a transducer array within a catheter housing. The method for minimizing tracking system interference also includes estimating a noise signal produced by the motor, selecting a tracking system signal strength and/or frequency adapted to minimize a tracking system interference, and implementing a field generator to produce a tracking system signal at the selected tracking system signal strength and/or frequency.
    Type: Grant
    Filed: October 3, 2007
    Date of Patent: March 22, 2011
    Assignee: General Electric Company
    Inventors: Dun Alex Li, Nora T. Tgavalekos, Jonathan David Schiff
  • Publication number: 20090118620
    Abstract: A surgical navigation system including an ultrasound catheter is disclosed herein. The ultrasound catheter includes a flexible catheter housing defining a distal end, a transducer array disposed at least partially within the catheter housing, and a motor coupled with the transducer array. The motor is configured to rotate the transducer array in order to image a three-dimensional (3D) volume. The ultrasound catheter also includes at least one tracking element adapted to provide an estimate of a position and orientation of the distal end of the catheter housing. The at least one tracking element is disposed within the catheter housing and located immediately adjacent to the distal end.
    Type: Application
    Filed: August 28, 2008
    Publication date: May 7, 2009
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Nora T. Tgavalekos, Peter Traneus Anderson, Dun Alex Li, Jonathan David Schiff
  • Publication number: 20080287860
    Abstract: A surgical navigation system including an ultrasound catheter is disclosed herein. The ultrasound catheter includes a flexible catheter housing defining a distal end, a transducer array disposed at least partially within the catheter housing, and a motor coupled with the transducer array. The motor is configured to rotate the transducer array in order to image a three-dimensional volume. The ultrasound catheter also includes a tracking element adapted to provide an estimate of a position and/or orientation of the distal end of the catheter housing. The tracking element is disposed within the catheter housing and immediately adjacent to the distal end.
    Type: Application
    Filed: November 6, 2007
    Publication date: November 20, 2008
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Nora T. Tgavalekos, Dun Alex Li, Peter Traneus Anderson, Jonathan David Schiff
  • Publication number: 20080287802
    Abstract: A method for minimizing tracking system interference caused by a motor driven ultrasonic imaging device is disclosed herein. The method includes providing an ultrasonic imaging device adapted to obtain a generally real time three-dimensional image. The ultrasonic imaging device includes a motor configured to rotate a transducer array within a catheter housing. The method for minimizing tracking system interference also includes estimating a noise signal produced by the motor, selecting a tracking system signal strength and/or frequency adapted to minimize a tracking system interference, and implementing a field generator to produce a tracking system signal at the selected tracking system signal strength and/or frequency.
    Type: Application
    Filed: October 3, 2007
    Publication date: November 20, 2008
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Dun Alex Li, Nora T. Tgavalekos, Jonathan David Schiff
  • Publication number: 20080132757
    Abstract: A system and method from minimally invasive lung surgery employ a bronchoscope with a multi-channel catheter disposed in a channel of the bronchoscope. A transmitting antenna disposed at a distal end of the multi-channel catheter allows the distal end to be tracked in a tracking image during a surgical procedure.
    Type: Application
    Filed: December 1, 2006
    Publication date: June 5, 2008
    Applicant: GENERAL ELECTRIC COMPANY
    Inventor: Nora T. Tgavalekos