Patents by Inventor Dwight Nishimura

Dwight Nishimura 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).

  • Variable density signal sampling
    Publication number: 20060062486
    Abstract: An optimal sampling pattern for variable density sampling of a continuous signal uses a statistical knowledge of the signal to determine an autocorrelation matrix from which a basis set is identified. Sampling is performed at locations determined from an eigenvector matrix, and the sampled output provides coefficients for the basis set. The reconstructed signal output is a summation of the multiplication of the coefficients and the basis set.
    Type: Application
    Filed: September 17, 2004
    Publication date: March 23, 2006
    Applicant: The Board of Trustees of the Lean Stanford Junior University
    Inventors: Jin Lee, Brad Osgood, Dwight Nishimura
  • Artifact reduction in SSFP MRI using weighted sum of combined signals
    Publication number: 20050030023
    Abstract: Artifact reduction in steady state free precession magnetic resonance imaging uses weighting of acquired image data to emphasize higher signals and then establishing an image signal based on the combined weighted signals. In one embodiment, a SSFP imaging sequence uses phase cycling and acquired image data is squared with the squared data then combined. The final image signal is based on the square root of the squared data.
    Type: Application
    Filed: August 5, 2003
    Publication date: February 10, 2005
    Inventors: Neal Bangerter, Dwight Nishimura