Patents by Inventor Ray Xu

Ray Xu 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).

  • Truncation compensation in transmission reconstructions for a small FOV cardiac gamma camera
    Patent number: 7675038
    Abstract: A method and system for compensating truncated transmission projection data used for attenuation correction in a SPECT apparatus. The method and system include generating an initial estimate of a transmission reconstruction without modeling source geometry or detector collimator response and refining the transmission reconstruction by using the initial estimate with a modified model of the source geometry and the collimation geometry.
    Type: Grant
    Filed: August 27, 2007
    Date of Patent: March 9, 2010
    Assignee: Siemens Medical Solutions USA, Inc.
    Inventors: Manjit Ray, Eric Grant Hawman, Ray Xu
  • Reference Height Calibration Scheme For Modular Multi-Modality Medical Imaging System
    Publication number: 20090088621
    Abstract: A reference height calibration procedure obtains a reference error value, which can be used to adjust a height calibration parameter for registering the fields of view (FOVs) of the modules of a multi-modality medical imaging system such as a SPECT-CT imaging system.
    Type: Application
    Filed: September 29, 2008
    Publication date: April 2, 2009
    Applicant: SIEMENS MEDICAL SOLUTIONS USA, INC.
    Inventors: Ray Xu, Robert Peter Hurley, III, James T. Chapman
  • Truncation Compensation in Transmission Reconstructions for a Small FOV Cardiac Gamma Camera
    Publication number: 20090057560
    Abstract: A method and system for compensating truncated transmission projection data used for attenuation correction in a SPECT apparatus. The method and system include generating an initial estimate of a transmission reconstruction without modeling source geometry or detector collimator response and refining the transmission reconstruction by using the initial estimate with a modified model of the source geometry and the collimation geometry.
    Type: Application
    Filed: August 27, 2007
    Publication date: March 5, 2009
    Applicant: Siemens Medical Solutions USA, Inc.
    Inventors: Manjit Ray, Eric Grant Hawman, Ray Xu