Patents by Inventor Stephen McAleavey

Stephen McAleavey 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).

  • Shear-Modulus Estimation by Application of Spatially Modulated Impulse Acoustic Radiation Force Approximation
    Publication number: 20140180091
    Abstract: A method for determining a shear modulus of an elastic material with a known density value is provided. In this method, a spatially modulated acoustic radiation force is used to initially generate a disturbance of known spatial frequency or wavelength. The propagation of this initial displacement as a shear wave is measured using ultrasound tracking methods. A temporal frequency is determined based on the shear wave. The shear modulus of the elastic material at the point of excitation may be calculated using the values of the spatial wavelength, material density, and temporal frequency.
    Type: Application
    Filed: February 25, 2014
    Publication date: June 26, 2014
    Applicant: University of Rochester
    Inventor: Stephen McAleavey
  • Shear Modulus Estimation by Application of Spatially Modulated Impulse Acoustic Radiation Force Approximation
    Publication number: 20130165778
    Abstract: A method for determining a shear modulus of an elastic material with a known density value is provided. In this method, a spatially modulated acoustic radiation force is used to initially generate a disturbance of known spatial frequency or wavelength. The propagation of this initial displacement as a shear wave is measured using ultrasound tracking methods. A temporal frequency is determined based on the shear wave. The shear modulus of the elastic material at the point of excitation may be calculated using the values of the spatial wavelength, material density, and temporal frequency.
    Type: Application
    Filed: July 23, 2012
    Publication date: June 27, 2013
    Applicant: UNIVERSITY OF ROCHESTER
    Inventor: Stephen McAleavey
  • Shear modulus estimation by application of spatially modulated impulse acoustic radiation force approximation
    Patent number: 8225666
    Abstract: A method for determining a shear modulus of an elastic material with a known density value is provided. In this method, a spatially modulated acoustic radiation force is used to initially generate a disturbance of known spatial frequency or wavelength. The propagation of this initial displacement as a shear wave is measured using ultrasound tracking methods. A temporal frequency is determined based on the shear wave. The shear modulus of the elastic material at the point of excitation may be calculated using the values of the spatial wavelength, material density, and temporal frequency.
    Type: Grant
    Filed: May 9, 2008
    Date of Patent: July 24, 2012
    Assignee: University of Rochester
    Inventor: Stephen McAleavey
  • SHEAR MODULUS ESTIMATION BY APPLICATION OF SPATIALLY MODULATED IMPULSE ACOUSTIC RADIATION FORCE APPROXIMATION
    Publication number: 20090056453
    Abstract: A method for determining a shear modulus of an elastic material with a known density value is provided. In this method, a spatially modulated acoustic radiation force is used to initially generate a disturbance of known spatial frequency or wavelength. The propagation of this initial displacement as a shear wave is measured using ultrasound tracking methods. A temporal frequency is determined based on the shear wave. The shear modulus of the elastic material at the point of excitation may be calculated using the values of the spatial wavelength, material density, and temporal frequency.
    Type: Application
    Filed: May 9, 2008
    Publication date: March 5, 2009
    Inventor: Stephen McAleavey
  • Methods, systems, and computer program products for imaging using virtual extended shear wave sources
    Patent number: 6764448
    Abstract: Ultrasound energy is transmitted into tissue in a first direction to provide a virtual extended shear wave source. The virtual extended shear wave source generates an extended shear wave that propagates in a second direction substantially orthogonal to the first direction to cause movement in the first direction of tissue that is offset from the virtual extended shear wave source in the second direction. Related ultrasound imaging systems and computer program products are also disclosed.
    Type: Grant
    Filed: October 7, 2002
    Date of Patent: July 20, 2004
    Assignee: Duke University
    Inventors: Gregg E. Trahey, Kathryn R. Nightingale, Roger W. Nightingale, Stephen McAleavey
  • Methods, systems, and computer program products for imaging using virtual extended shear wave sources
    Publication number: 20040068184
    Abstract: Ultrasound energy is transmitted into tissue in a first direction to provide a virtual extended shear wave source. The virtual extended shear wave source generates an extended shear wave that propagates in a second direction substantially orthogonal to the first direction to cause movement in the first direction of tissue that is offset from the virtual extended shear wave source in the second direction. Related ultrasound imaging systems and computer program products are also disclosed.
    Type: Application
    Filed: October 7, 2002
    Publication date: April 8, 2004
    Inventors: Gregg E. Trahey, Kathryn R. Nightingale, Roger W. Nightingale, Stephen McAleavey