Patents by Inventor Daniel Joseph Schaefer

Daniel Joseph Schaefer 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).

  • Gradient coil apparatus for magnetic resonance imaging
    Patent number: 6882153
    Abstract: A method for decreasing gradient field pulse sequence duration for a magnetic resonance imaging system, the method comprising: establishing an allowable gradient field strength for an axis of a plurality of axes for a field of view; applying a weighting factor associated with each axis of the plurality of axes; establishing a slew rate responsive to a selected axis of the plurality of axes that exhibits a largest gradient field strength in light of the weighting factor and the field of view; and operating the plurality of axes at the largest gradient field strength.
    Type: Grant
    Filed: April 7, 2004
    Date of Patent: April 19, 2005
    Assignee: GE Medical Systems Global Technology Company, LLC
    Inventors: Robert Michael Vavrek, Graeme Colin McKinnon, Daniel Joseph Schaefer
  • GRADIENT COIL APPARATUS FOR MAGNETIC RESONANCE IMAGING
    Publication number: 20040189298
    Abstract: A method for decreasing gradient field pulse sequence duration for a magnetic resonance imaging system, the method comprising: establishing an allowable gradient field strength for an axis of a plurality of axes for a field of view; applying a weighting factor associated with each axis of the plurality of axes; establishing a slew rate responsive to a selected axis of the plurality of axes that exhibits a largest gradient field strength in light of the weighting factor and the field of view; and operating the plurality of axes at the largest gradient field strength.
    Type: Application
    Filed: April 7, 2004
    Publication date: September 30, 2004
    Applicant: General Electric Company
    Inventors: Robert Michael Vavrek, Graeme Colin McKinnon, Daniel Joseph Schaefer
  • Gradient coil apparatus for magnetic resonance imaging
    Publication number: 20040075434
    Abstract: A gradient coil assembly for a magnetic resonance imaging system comprising: a first gradient coil configured to generate a first gradient field in a first field of view; a second gradient coil configured to generate a second gradient field orthogonal to the first gradient field in a second field of view; and a third gradient coil configured to generate a third gradient field orthogonal to the first gradient field and the second gradient field in a plurality of fields of view.
    Type: Application
    Filed: October 16, 2002
    Publication date: April 22, 2004
    Inventors: Robert Michael Vavrek, Graeme Colin McKinnon, Daniel Joseph Schaefer