Patents by Inventor Tanvir N. Baig

Tanvir N. Baig 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).

  • Active-passive electromagnetic shielding to reduce MRI acoustic noise
    Patent number: 7375526
    Abstract: The present invention provides an apparatus for reducing acoustic noise in a magnetic resonance imaging device including passive shielding located outside the actively shielded gradient winding elements in order to reduce the magnitude of fields that spread outside the gradient coil assembly in unwanted directions and interact with the magnet cryostat or other metallic magnet parts, inducing eddy currents that cause consequent acoustic noise. The passive shielding elements are conducting layers located on the outer radius of the cylindrical gradient coil assembly in a cylindrical magnet system, conducting layers located at the ends of the gradient coil assembly in a cylindrical magnet system, and conducting layers located inside the actively shielded gradient winding inner elements in a cylindrical magnet system. The passive shielding could also be located on separate structures that are vibrationally isolated from the magnet cryostat.
    Type: Grant
    Filed: October 20, 2006
    Date of Patent: May 20, 2008
    Inventors: William A. Edelstein, Tesfaye K. Kidane, Victor Taracilla, Tanvir N. Baig, Timothy P. Eagan, Robert W. Brown
  • ACTIVE-PASSIVE ELECTROMAGNETIC SHIELDING TO REDUCE MRI ACOUSTIC NOISE
    Publication number: 20080094062
    Abstract: The present invention provides an apparatus for reducing acoustic noise in a magnetic resonance imaging device including passive shielding located outside the actively shielded gradient winding elements in order to reduce the magnitude of fields that spread outside the gradient coil assembly in unwanted directions and interact with the magnet cryostat or other metallic magnet parts, inducing eddy currents that cause consequent acoustic noise. The passive shielding elements are conducting layers located on the outer radius of the cylindrical gradient coil assembly in a cylindrical magnet system, conducting layers located at the ends of the gradient coil assembly in a cylindrical magnet system, and conducting layers located inside the actively shielded gradient winding inner elements in a cylindrical magnet system. The passive shielding could also be located on separate structures that are vibrationally isolated from the magnet cryostat.
    Type: Application
    Filed: October 20, 2006
    Publication date: April 24, 2008
    Inventors: William A. Edelstein, Tesfaye K. Kidane, Victor Taracilla, Tanvir N. Baig, Timothy P. Eagan, Robert W. Brown
  • Active-passive electromagnetic shielding to reduce MRI acoustic noise
    Patent number: 7141974
    Abstract: The present invention provides an apparatus for reducing acoustic noise in a magnetic resonance imaging device including passive shielding located outside the actively shielded gradient winding elements in order to reduce the magnitude of fields that spread outside the gradient coil assembly in unwanted directions and interact with the magnet cryostat or other metallic magnet parts, inducing eddy currents that cause consequent acoustic noise. The passive shielding elements are conducting layers located on the outer radius of the cylindrical gradient coil assembly in a cylindrical magnet system, conducting layers located at the ends of the gradient coil assembly in a cylindrical magnet system, and conducting layers located inside the actively shielded gradient winding inner elements in a cylindrical magnet system. The passive shielding could also be located on separate structures that are vibrationally isolated from the magnet cryostat.
    Type: Grant
    Filed: August 25, 2004
    Date of Patent: November 28, 2006
    Inventors: William A Edelstein, Tesfaye K. Kidane, Victor Taracilla, Tanvir N. Baig, Timothy P. Eagan, Robert W. Brown