Patents by Inventor Afonso C. Silva

Afonso C. Silva 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).

  • Inductive decoupling of a RF coil array
    Patent number: 7932721
    Abstract: An apparatus for imaging includes: a radio frequency (RF) coil array having a first RF coil and at least one additional RF coil, where the RF coil array is adapted to generate an image signal; a preamplifier having an input impedance, where the preamplifier is adapted to receive the image signal from the first RF coil; and a transformer to couple the first RF coil to the preamplifier, where impedance of the transformer is adapted to match the input impedance of the preamplifier.
    Type: Grant
    Filed: April 6, 2007
    Date of Patent: April 26, 2011
    Assignee: The United States of America as represented by the Department of Health and Human Services
    Inventors: George Nascimento, Afonso C. Silva
  • INDUCTIVE DECOUPLING OF A RF COIL ARRAY
    Publication number: 20090289630
    Abstract: An apparatus for imaging includes: a radio frequency (RF) coil array having a first RF coil and at least one additional RF coil, where the RF coil array is adapted to generate an image signal; a preamplifier having an input impedance, where the preamplifier is adapted to receive the image signal from the first RF coil; and a transformer to couple the first RF coil to the preamplifier, where impedance of the transformer is adapted to match the input impedance of the preamplifier.
    Type: Application
    Filed: April 6, 2007
    Publication date: November 26, 2009
    Applicant: The Government of the United States of America, represented by The Secretary, DHHS
    Inventors: George Nascimento, Afonso C. Silva