Patents by Inventor Rui Carlos Pereira De Sá

Rui Carlos Pereira De Sá 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).

  • Magnetic resonance imaging of ventilation and perfusion in the lung
    Patent number: 9750427
    Abstract: Methods, devices, and systems are disclosed for implementing a fully quantitative non-injectable contrast proton MRI technique to measure spatial ventilation-perfusion (VA/Q) matching and spatial distribution of ventilation and perfusion. In one aspect, a method using MRI to characterize ventilation and perfusion in a lung includes acquiring an MR image of the lung having MR data in a voxel and obtaining a breathing frequency parameter, determining a water density value, a specific ventilation value, and a perfusion value in at least one voxel of the MR image based on the MR data and using the water density value to determine an air content value, and determining a ventilation-perfusion ratio value that is the product of the specific ventilation value, the air content value, the inverse of the perfusion value, and the breathing frequency.
    Type: Grant
    Filed: December 7, 2011
    Date of Patent: September 5, 2017
    Assignee: The Regents of the University of California
    Inventors: Gordon Kim Prisk, Susan Roberta Hopkins, Richard Bruce Buxton, Rui Carlos Pereira De Sá, Rebecca Jean Theilmann, Matthew Vincent Cronin
  • MAGNETIC RESONANCE IMAGING OF VENTILATION AND PERFUSION IN THE LUNG
    Publication number: 20130338489
    Abstract: Methods, devices, and systems are disclosed for implementing a fully quantitative non-injectable contrast proton MRI technique to measure spatial ventilation-perfusion (VA/Q) matching and spatial distribution of ventilation and perfusion. In one aspect, a method using MRI to characterize ventilation and perfusion in a lung includes acquiring an MR image of the lung having MR data in a voxel and obtaining a breathing frequency parameter, determining a water density value, a specific ventilation value, and a perfusion value in at least one voxel of the MR image based on the MR data and using the water density value to determine an air content value, and determining a ventilation-perfusion ratio value that is the product of the specific ventilation value, the air content value, the inverse of the perfusion value, and the breathing frequency.
    Type: Application
    Filed: December 7, 2011
    Publication date: December 19, 2013
    Applicant: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
    Inventors: Gordon Kim Prisk, Susan Roberta Hopkins, Richard Bruce Buxton, Rui Carlos Pereira De Sá, Rebecca Jean Theilmann, Matthew Vincent Cronin