Padmavathi Sundaram

age ~49

from Charlestown, MA

Also known as:
  • Padmavathi S Patel

Padmavathi Sundaram Phones & Addresses

  • Charlestown, MA
  • Groton, NY
  • Palo Alto, CA
  • Menlo Park, CA

Resumes

Padmavathi Sundaram Photo 1

Padmavathi Sundaram

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Us Patents

  • Polyp Detection Using Smoothed Shape Operators

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  • US Patent:
    8055047, Nov 8, 2011
  • Filed:
    Aug 14, 2007
  • Appl. No.:
    11/893366
  • Inventors:
    Padmavathi Sundaram - Palo Alto CA, US
    Sandy A. Napel - Menlo Park CA, US
    Christopher F. Beaulieu - Los Altos CA, US
  • Assignee:
    The Board of Trustees of the Leland Stanford Junior University - Palo Alto CA
  • International Classification:
    G06K 9/00
  • US Classification:
    382131, 382128, 382132, 382154, 382181, 382190, 382195, 382205
  • Abstract:
    Improved surface feature recognition in CT images is provided by extracting a triangulated mesh representation of the surface of interest. Shape operators are computed at each vertex of the mesh from finite differences of vertex normals. The shape operators at each vertex are smoothed according to an iterative weighted averaging procedure. Principal curvatures at each vertex are computed from the smoothed shape operators. Vertices are marked as maxima and/or minima according to the signs of the principal curvatures. Vertices marked as having the same feature type are clustered together by adjacency on the mesh to provide candidate patches. Feature scores are computed for each candidate patch and the scores are provided as output to a user or for further processing.
  • Selective Fold Removal In Medical Images

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  • US Patent:
    20080089569, Apr 17, 2008
  • Filed:
    Oct 14, 2005
  • Appl. No.:
    11/664759
  • Inventors:
    Padmavathi Sundaram - Palo Alto CA, US
    Daved S. Paik - Half Moon Baiy CA, US
    Eftychis Sifakis - Stanford CA, US
    Christopher F. Beaulieu - Los Altos CA, US
    Ron Fedkiw - Sunnyvale CA, US
    Sandy A. Napel - Menlo Park CA, US
  • Assignee:
    The Board of Trustees of the Leland Stanford Junior University - Palo Alto CA
  • International Classification:
    G06K 9/00
  • US Classification:
    382131
  • Abstract:
    A method of selectively removing folds in a medical image is provided. With this method, a medical image is deformed to straighten and flatten folds but not polyps, thus allowing polyps to be identified. In a first step, a 3-dimensional deformable model of the medical image is constructed. This model is set to have a high Young's modulus and a low Poisson's ratio. In a preferred embodiment, the model is a continuum surface model, preferably a quasistatic continuum finite element model. Once the model has been constructed, it is deformed such that folds are removed but polyps remain, allowing polyps to be identified.
  • Polyp Identification Through Subtraction Of Models Of Medical Images

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  • US Patent:
    20080310693, Dec 18, 2008
  • Filed:
    Nov 8, 2005
  • Appl. No.:
    11/666202
  • Inventors:
    David S. Paik - Half Moon Bay CA, US
    Padmavathi Sundaram - Palo Alto CA, US
    Christopher F. Beaulieu - Los Altos CA, US
    Sandy A. Napel - Menlo Park CA, US
  • International Classification:
    G06K 9/00
  • US Classification:
    382130
  • Abstract:
    A method of identifying polyps and in a medical image is provided. In a first step, a 3-dimensional model is made of the medical image that contains both polyps (if any were present in the original medical image) and folds. Next, a second 3-dimensional model of the medical image, which is a filtered version of the first model, is constructed in which folds are preserved, but polyps are minimized or eliminated. In a third step, any polyps that were contained in the medical image are identified by subtracting the second 3-dimensional model from the first 3-dimensional model. This subtraction results in a third 3-dimensional model, in which polyps are preserved but folds are minimized or eliminated. With the present inventive method, polyps may be easily and quickly identified without interference from folds.

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