Patents by Inventor Michalakis Averkiou

Michalakis Averkiou 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).

  • Ultrasonic diagnostic imaging of harmonic frequencies with speckle reduction processing
    Patent number: 5908389
    Abstract: An ultrasonic diagnostic imaging system and methods are described which produces ultrasonic images from harmonic echo components of a transmitted fundamental frequency. Preferably, a programmable digital filter is used to pass harmonic echo components for image processing to the exclusion of fundamental frequency signals. In a preferred embodiment, artifacts are removed by producing decorrelated replicas of the harmonic signals, which are then combined and used for imaging. To produce an image in the presence of depth dependent attenuation of high frequency echo signals, both fundamental and harmonic echo signals are processed and used to produce an image blended from components of both fundamental and harmonic echo signals.
    Type: Grant
    Filed: June 17, 1998
    Date of Patent: June 1, 1999
    Assignee: ATL Ultrasound, Inc.
    Inventors: David N. Roundhill, Michalakis Averkiou
  • Ultrasonic diagnostic imaging of response frequency differing from transmit frequency
    Patent number: 5879303
    Abstract: An ultrasonic diagnostic imaging system and methods are described which produces ultrasonic images from harmonic echo components of a transmitted fundamental frequency. Preferably, a programmable digital filter is used to pass harmonic echo components for image processing to the exclusion of fundamental frequency signals. In a preferred embodiment, artifacts are removed by producing decorrelated replicas of the harmonic signals, which are then combined and used for imaging. To produce an image in the presence of depth dependent attenuation of high frequency echo signals, both fundamental and harmonic echo signals are processed and used to produce an image blended from components of both fundamental and harmonic echo signals.
    Type: Grant
    Filed: October 3, 1997
    Date of Patent: March 9, 1999
    Assignee: ATL Ultrasound
    Inventors: Michalakis Averkiou, Jeffry E. Powers, Peter N. Burns, David N. Roundhill, Juin-Jet Hwang
  • Ultrasonic diagnostic imaging with contrast agents
    Patent number: 5833613
    Abstract: Apparatus and methods are disclosed for the detection and imaging of ultrasonic contrast agents. Ultrasonic apparatus is provided for coherent imaging of ultrasonic contrast agents, and for detecting harmonic contrast agents. The inventive apparatus includes a dual display for simultaneously viewing a real time image which displays the location of the contrast agent and a triggered contrast image. Methods of contrast agent detection and imaging include the measurement of perfusion rate characteristics, multizone contrast imaging, multifrequency contrast imaging, tissue perfusion display, and high PRF contrast image artifact elimination.
    Type: Grant
    Filed: September 27, 1996
    Date of Patent: November 10, 1998
    Assignee: Advanced Technology Laboratories, Inc.
    Inventors: Michalakis Averkiou, Matthew Bruce, Jeffry E. Powers