Patents by Inventor Srivathsan Prabu Koundinyan

Srivathsan Prabu Koundinyan 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).

  • CALIBRATION METHOD FOR A SPECTRAL COMPUTERIZED TOMOGRAPHY SYSTEM
    Publication number: 20220122300
    Abstract: A calibration method for an x-ray computerized tomography system and a method of tomographic reconstruction are provided. The calibration method includes steps of measuring at least one point spread function (PSF) at each of a plurality of points, compressing each PSF, and in one or more storing operations, storing the compressed PSFs in a computer-accessible storage medium. The PSF measurements are made in a grid of calibration points in a field of view (FOV) of the system. In the measuring step, an absorber is positioned at each of the calibration points, and an x-ray projection is taken at least once at each of those absorber positions. In the method of tomographic image reconstruction, projection data from an x-ray tomographic projection system are input to an iterative image reconstruction algorithm.
    Type: Application
    Filed: December 16, 2021
    Publication date: April 21, 2022
    Inventors: Edward Steven Jimenez, JR., Srivathsan Prabu Koundinyan, Isabel Gallegos, Adriana Stohn, Gabriella Dalton
  • Calibration method for a spectral computerized tomography system
    Patent number: 11263792
    Abstract: A calibration method for an x-ray computerized tomography system and a method of tomographic reconstruction are provided. The calibration method includes steps of measuring at least one point spread function (PSF) at each of a plurality of points, compressing each PSF, and in one or more storing operations, storing the compressed PSFs in a computer-accessible storage medium. The PSF measurements are made in a grid of calibration points in a field of view (FOV) of the system. In the measuring step, an absorber is positioned at each of the calibration points, and an x-ray projection is taken at least once at each of those absorber positions. In the method of tomographic image reconstruction, projection data from an x-ray tomographic projection system are input to an iterative image reconstruction algorithm.
    Type: Grant
    Filed: December 23, 2019
    Date of Patent: March 1, 2022
    Assignee: National Technology & Engineering Solutions of Sandia, LLC
    Inventors: Edward Steven Jimenez, Jr., Srivathsan Prabu Koundinyan, Isabel Gallegos, Adriana Stohn, Gabriella Dalton