Patents by Inventor Joyoni Dey

Joyoni Dey 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).

  • Publication number: 20210065924
    Abstract: A phase contrast X-ray imaging system includes: an illumination source adapted to illuminate a region of interest; a diffraction grating adapted to receive illumination from the illuminated region of interest, the diffraction grating comprising a spatial structure having a first periodicity superimposed with a second periodicity that is different from the first periodicity; and a detector adapted to detect illumination passing through the diffraction grating, wherein the spatial structure is defined by varying height and/or pitch, and wherein the spatial structure imparts a first phase dependence based on the first periodicity and an additional phase dependence based on the second periodicity on the illumination passing through the diffraction grating.
    Type: Application
    Filed: November 13, 2020
    Publication date: March 4, 2021
    Applicant: Board of Supervisors of Louisiana State University and Agricultural and Mechanical College
    Inventors: Joyoni Dey, Narayan Bhusal, Leslie Butler, Jonathan P. Dowling, Kyungmin Ham, Varshni Singh
  • Patent number: 10872708
    Abstract: A phase contrast X-ray imaging system includes: an illumination source adapted to illuminate a region of interest; a diffraction grating adapted to receive illumination from the illuminated region of interest, the diffraction grating comprising a spatial structure having a first periodicity superimposed with a second periodicity that is different from the first periodicity; and a detector adapted to detect illumination passing through the diffraction grating, wherein the spatial structure is defined by varying height and/or pitch, and wherein the spatial structure imparts a first phase dependence based on the first periodicity and an additional phase dependence based on the second periodicity on the illumination passing through the diffraction grating.
    Type: Grant
    Filed: July 24, 2018
    Date of Patent: December 22, 2020
    Assignee: Board of Supervisors of Louisiana State University and Agricultural and Mechanical College
    Inventors: Joyoni Dey, Narayan Bhusal, Leslie Butler, Jonathan P. Dowling, Kyungmin Ham, Varshni Singh
  • Publication number: 20190027265
    Abstract: A phase contrast X-ray imaging system includes: an illumination source adapted to illuminate a region of interest; a diffraction grating adapted to receive illumination from the illuminated region of interest, the diffraction grating comprising a spatial structure having a first periodicity superimposed with a second periodicity that is different from the first periodicity; and a detector adapted to detect illumination passing through the diffraction grating, wherein the spatial structure is defined by varying height and/or pitch, and wherein the spatial structure imparts a first phase dependence based on the first periodicity and an additional phase dependence based on the second periodicity on the illumination passing through the diffraction grating.
    Type: Application
    Filed: July 24, 2018
    Publication date: January 24, 2019
    Applicant: BOARD OF SUPERVISORS OF LOUISIANA STATE UNIVERSITY AND AGRICULTURAL AND MECHANICAL COLLEGE
    Inventors: Joyoni Dey, Narayan Bhusal, Leslie Butler, Jonathan P. Dowling, Kyungmin Ham, Varshni Singh
  • Patent number: 8519351
    Abstract: Systems and methods for providing improved detectors for use in SPECT cameras. The improved detectors use pinhole apertures and surfaces calculated to provide improved sensitivity and resolution. In some embodiments, the detectors have non-planar surfaces. In some embodiments, the surfaces are spherical, conical, parabolic, or other non-planar forms.
    Type: Grant
    Filed: April 28, 2010
    Date of Patent: August 27, 2013
    Assignee: University of Massachusetts
    Inventors: Joyoni Dey, Stephen J. Glick
  • Publication number: 20110275933
    Abstract: The invention relates to methods and systems for compensating for respiratory motion of individuals during nuclear imaging. In some embodiments, the methods include obtaining data representing a reference respiratory state for the individual and obtaining data that represents a plurality of respiratory states that correspond to at least a portion of a cycle of respiration of the individual; comparing each of the plurality of respiratory states to a subset of the reference state data to obtain a motion estimate of each of the plurality of respiratory states; compensating for respiratory motion in each of the plurality of respiratory states based on the motion estimates to obtain motion-compensated respiratory state data; and constructing an image using the motion-compensated respiratory state data.
    Type: Application
    Filed: October 22, 2009
    Publication date: November 10, 2011
    Applicant: UNIVERSITY OF MASSACHUSETTS
    Inventors: Joyoni DEY, Michael A. King
  • Publication number: 20100282977
    Abstract: Systems and methods for providing improved detectors for use in SPECT cameras. The improved detectors use pinhole apertures and surfaces calculated to provide improved sensitivity and resolution. In some embodiments, the detectors have non-planar surfaces. In some embodiments, the surfaces are spherical, conical, parabolic, or other non-planar forms.
    Type: Application
    Filed: April 28, 2010
    Publication date: November 11, 2010
    Applicant: University of Massachusetts
    Inventors: Joyoni Dey, Stephen J. Glick