Patents by Inventor Angel R. Pineda

Angel R. Pineda 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).

  • Maximum likelihood estimator in the presence of non-identically distributed noise for decomposition of chemical species in MRI
    Patent number: 7592807
    Abstract: A method of separating signals from at least two species in a body using echo-coherent time magnetic resonance imaging is provided. A plurality of echo signals is acquired at acquisition times optimized based on the noise properties of images with different variance with possibly correlated noise resulting in possibly asymmetrically positioned images with respect to an echo time. The plurality of echo signals is combined iteratively by using a maximum likelihood decomposition algorithm for non-identically distributed noise.
    Type: Grant
    Filed: April 20, 2007
    Date of Patent: September 22, 2009
    Assignee: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Angel R. Pineda, Charles A. McKenzie, Huanzhou Yu, Scott B. Reeder
  • Regularized species separation
    Patent number: 7508211
    Abstract: A method for generating a magnetic resonance images is provided. A magnetic resonance imaging excitation is applied. A plurality of magnetic resonance image signals is acquired. The plurality of image signals is combined iteratively by using a regularized decomposition algorithm. An image created from combining the plurality of image signals iteratively is displayed.
    Type: Grant
    Filed: April 20, 2007
    Date of Patent: March 24, 2009
    Assignee: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Zhifei Wen, Angel R. Pineda, Huanzhou Yu, Scott B. Reeder, Norbert J. Pelc
  • Simultaneous chemical species separation and T* measurement using MRI
    Patent number: 7468605
    Abstract: A method for generating a magnetic resonance image is provided. A magnetic resonance imaging excitation is applied for a plurality of cycles at a cycle rate. A plurality of magnetic resonance image echoes is acquired for each cycle. A decay map is estimated from the plurality of magnetic resonance image echoes for each cycle. The estimated decay map is used to generate an image for at least two different species.
    Type: Grant
    Filed: April 20, 2007
    Date of Patent: December 23, 2008
    Assignee: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Huanzhou Yu, Scott B. Reeder, Charles A. McKenzie, Angel R. Pineda
  • Iterative decomposition of water and fat with echo asymmetry and least square estimation
    Patent number: 7176683
    Abstract: A method of separating signals from water and lipid in a body using spin-echo magnetic resonance imaging comprising steps of acquiring image signals at three acquisition times asymmetrically positioned with respect to a spin-echo time, the three acquisition times being separated by 2?/3 and the middle signal acquisition is centered at ?/2+?k where k is an integer, and combining the plurality of image signals iterative using a least squares decomposition method.
    Type: Grant
    Filed: May 6, 2005
    Date of Patent: February 13, 2007
    Assignee: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Scott B. Reeder, Angel R. Pineda