Patents by Inventor Srikrishnan Viswanathan

Srikrishnan Viswanathan 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).

  • Patent number: 9471976
    Abstract: A method implemented using at least one processor includes receiving time-varying image dataset generated by a medical imaging modality. The image dataset corresponds to a bed position and is affected by quasi-periodic motion data. The method also includes applying a signal decomposition technique to the time-varying image dataset to generate a plurality of dataset components and a plurality of motion signals. The method also includes determining reference data based on the time-varying image dataset, wherein the reference data is representative of a direction of the quasi-periodic motion. The method further includes deriving polarity of each of the plurality of motion signals based on the reference data to generate a plurality of sign corrected motion signals. The method also includes determining a gating signal corresponding to the bed position based on at least one of the plurality of sign corrected motion signals.
    Type: Grant
    Filed: February 20, 2015
    Date of Patent: October 18, 2016
    Assignee: General Electric Company
    Inventors: Sheshadri Thiruvenkadam, Krishna Seetharam Shriram, Ravindra Mohan Manjeshwar, Srikrishnan Viswanathan, Kris Filip Johan Jules Thielemans
  • Publication number: 20160247274
    Abstract: A method implemented using at least one processor includes receiving time-varying image dataset generated by a medical imaging modality. The image dataset corresponds to a bed position and is affected by quasi-periodic motion data. The method also includes applying a signal decomposition technique to the time-varying image dataset to generate a plurality of dataset components and a plurality of motion signals. The method also includes determining reference data based on the time-varying image dataset, wherein the reference data is representative of a direction of the quasi-periodic motion. The method further includes deriving polarity of each of the plurality of motion signals based on the reference data to generate a plurality of sign corrected motion signals. The method also includes determining a gating signal corresponding to the bed position based on at least one of the plurality of sign corrected motion signals.
    Type: Application
    Filed: February 20, 2015
    Publication date: August 25, 2016
    Inventors: Sheshadri Thiruvenkadam, Krishna Seetharam Shriram, Ravindra Mohan Manjeshwar, Srikrishnan Viswanathan, Kris Filip Johan Jules Thielemans
  • Patent number: 8781160
    Abstract: A method of image object tracking and segmentation is provided. The method includes defining an initial contour for tracking an image object and partitioning the initial contour into a plurality of contour segments. The method also includes estimating a weighted length of each of the plurality of contour segments and generating a desired contour by converging the plurality of contour segments to a plurality of edges of the image object using the estimated weighted length.
    Type: Grant
    Filed: December 31, 2009
    Date of Patent: July 15, 2014
    Assignee: Indian Institute of Technology Bombay
    Inventors: Srikrishnan Viswanathan, Subhasis Chaudhuri
  • Patent number: 8569706
    Abstract: A method for generating an image is provided. The method comprises: acquiring a first set of image data using a first imaging modality; sorting the first set of image data into a plurality of gates to generate a plurality of gated data sets; reconstructing each gated data set to generate a respective gated image for each gated data set; registering the respective gated images to generate a plurality of registered images; and generating a median image from the plurality of registered images, wherein each voxel of the median image is a respective median value of the corresponding voxels of the plurality of registered images.
    Type: Grant
    Filed: June 1, 2012
    Date of Patent: October 29, 2013
    Assignee: General Electric Company
    Inventors: Sheshadri Thiruvenkadam, Rakesh Mullick, Kris Filip Johan Jules Thielemans, Srikrishnan Viswanathan
  • Publication number: 20120305780
    Abstract: A method for generating an image is provided. The method comprises: acquiring a first set of image data using a first imaging modality; sorting the first set of image data into a plurality of gates to generate a plurality of gated data sets; reconstructing each gated data set to generate a respective gated image for each gated data set; registering the respective gated images to generate a plurality of registered images; and generating a median image from the plurality of registered images, wherein each voxel of the median image is a respective median value of the corresponding voxels of the plurality of registered images.
    Type: Application
    Filed: June 1, 2012
    Publication date: December 6, 2012
    Inventors: Sheshadri THIRUVENKADAM, Rakesh Mullick, Kris Filip Johan Jules Thielemans, Srikrishnan Viswanathan