Patents by Inventor Kurt Luescher

Kurt Luescher 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).

  • Patent number: 7446528
    Abstract: A radio frequency (RF) coil array is used in resonance imaging and/or analysis of a subject located within a cylindrical space in which a magnetic field is operatively applied in an axial direction (z). The coil array comprises a plurality of coil elements (10, 11, 12, 13) angled relative to each other about the axis of the cylindrical space, each coil element having a pair of main conductors extending generally parallel to the direction of the magnetic field and located on diametrically opposite sides of the cylindrical space, and a pair of connection conductors connected between respective ends of the main conductors. Each coil element has its maximum sensitivity near the centre of the cylindrical space, so that the subject under study is located in a region of maximum sensitivity.
    Type: Grant
    Filed: August 29, 2003
    Date of Patent: November 4, 2008
    Assignee: The University of Queensland
    Inventors: David Michael Doddrell, Stuart Crozier, Kurt Luescher, Wolfgang Udo Roffman
  • Patent number: 7348780
    Abstract: Asymmetric radio frequency (RF) coils for magnetic resonance applications are provided. Also provided are time harmonic methods for designing such coils as well as symmetric coils. In addition, methods for converting complex current density functions into discrete capacitive and inductive elements are provided.
    Type: Grant
    Filed: April 12, 2004
    Date of Patent: March 25, 2008
    Assignee: NMR Holdings No. 2 Pty Limited
    Inventors: Stuart Crozier, Ben Lawrence, Desmond Yau, Kurt Luescher, Wolfgang Udo Roffman, David Michael Doddrell
  • Publication number: 20060119358
    Abstract: A radio frequency (RF) coil array is used in resonance imaging and/or analysis of a subject located within a cylindrical space in which a magnetic field is operatively applied in an axial direction (z). The coil array comprises a plurality of coil elements (10, 11, 12, 13) angled relative to each other about the axis of the cylindrical space, each coil element having a pair of main conductors extending generally parallel to the direction of the magnetic field and located on diametrically opposite sides of the cylindrical space, and a pair of connection conductors connected between respective ends of the main conductors. Each coil element has its maximum sensitivity near the centre of the cylindrical space, so that the subject under study is located in a region of maximum sensitivity.
    Type: Application
    Filed: August 29, 2003
    Publication date: June 8, 2006
    Applicant: The University of Queensland
    Inventors: David Doddrell, Stuart Crozier, Kurt Luescher, Wolfgang Roffman
  • Publication number: 20040189303
    Abstract: Asymmetric radio frequency (RF) coils for magnetic resonance applications are provided. Also provided are time harmonic methods for designing such coils as well as symmetric coils. In addition, methods for converting complex current density functions into discrete capacitive and inductive elements are provided.
    Type: Application
    Filed: April 12, 2004
    Publication date: September 30, 2004
    Applicant: NMR Holdings No. 2 Pty Limited
    Inventors: Stuart Crozier, Ben Lawrence, Desmond Yau, Kurt Luescher, Wolfgang Udo Roffman, David Michael Doddrell
  • Patent number: 6720768
    Abstract: Asymmetric radio frequency (RF) coils for magnetic resonance applications are provided. Also provided are time harmonic methods for designing such coils as well as symmetric coils. In addition, methods for converting complex current density functions into discrete capacitive and inductive elements are provided.
    Type: Grant
    Filed: September 5, 2001
    Date of Patent: April 13, 2004
    Assignee: NMR Holdings No. 2 Pty Limited
    Inventors: Stuart Crozier, Ben Lawrence, Desmond Yau, Kurt Luescher, Wolfgang Udo Roffman, David Michael Doddrell
  • Publication number: 20020057087
    Abstract: Asymmetric radio frequency (RF) coils for magnetic resonance applications are provided. Also provided are time harmonic methods for designing such coils as well as symmetric coils. In addition, methods for converting complex current density functions into discrete capacitive and inductive elements are provided.
    Type: Application
    Filed: September 5, 2001
    Publication date: May 16, 2002
    Inventors: Stuart Crozier, Ben Lawrence, Desmond Yau, Kurt Luescher, Wolfgang Udo Roffman, David Michael Doddrell
  • Patent number: 6118274
    Abstract: An NMR probehead is proposed having a generally cylindrical casing extending along a probehead axis. The NMR probehead can be inserted into the room temperature bore of an NMR spectrometer magnet providing, in a measurement region, a homogeneous static magnetic field along the probehead axis. The NMR probehead comprises a cylindrical radio frequency (RF) resonator oriented along a resonator axis and generating essentially homogeneous RF magnetic fields transverse to the resonator axis. In accordance with the invention, the angle between the probehead axis and the resonator axis is different from 0.degree.. In this manner, the inclination of the resonator does not affect the useful RF magnetic field and the signal to noise ratio of the received NMR signal is independent of the inclination angle.
    Type: Grant
    Filed: August 3, 1998
    Date of Patent: September 12, 2000
    Assignee: University of Queensland
    Inventors: Wolfgang Udo Roffmann, Kurt Luescher, Stuart Crozier, David Michael Doddrell