Patents by Inventor Mahsa Amirrashedi

Mahsa Amirrashedi 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).

  • Normalization of a positron emission tomography scanner
    Patent number: 11172906
    Abstract: A method for normalization of a positron emission tomography (PET) scanner. The PET scanner includes a plurality of blocks. Each of the plurality of blocks includes a plurality of rows. Each of the plurality of rows includes a plurality of actual detectors and an unused area. The method includes acquiring a plurality of lines of response (LORs) by scanning a normalization phantom, obtaining a plurality of actual counts by extracting a plurality of LORs subsets from the plurality of LORs and counting a number of elements in each LORs subset, generating a plurality of virtual detectors in each of the plurality of rows by assigning the unused area to the plurality of virtual detectors, generating a count profile for the plurality of actual detectors, estimating a plurality of virtual counts based on the count profile, and applying a normalization process on the plurality of blocks.
    Type: Grant
    Filed: January 17, 2020
    Date of Patent: November 16, 2021
    Assignee: PARTO NEGAR PERSIA (PNP) COMPANY
    Inventors: Mahsa Amirrashedi, Mohammad reza Ay, Saeed Sarkar, Mohammad Hossein Farahani
  • NORMALIZATION OF A POSITRON EMISSION TOMOGRAPHY SCANNER
    Publication number: 20200146649
    Abstract: A method for normalization of a positron emission tomography (PET) scanner. The PET scanner includes a plurality of blocks. Each of the plurality of blocks includes a plurality of rows. Each of the plurality of rows includes a plurality of actual detectors and an unused area. The method includes acquiring a plurality of lines of response (LORs) by scanning a normalization phantom, obtaining a plurality of actual counts by extracting a plurality of LORs subsets from the plurality of LORs and counting a number of elements in each LORs subset, generating a plurality of virtual detectors in each of the plurality of rows by assigning the unused area to the plurality of virtual detectors, generating a count profile for the plurality of actual detectors, estimating a plurality of virtual counts based on the count profile, and applying a normalization process on the plurality of blocks.
    Type: Application
    Filed: January 17, 2020
    Publication date: May 14, 2020
    Applicant: Parto Negar Persia (PNP) Company
    Inventors: Mahsa Amirrashedi, Mohammad reza Ay, Saeed Sarkar, Mohammad Hossein Farahani