Patents by Inventor Eric W. Hansen

Eric W. Hansen 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).

  • System and method for use of nanoparticles in magnetic particle imaging (MPI) and temperature measurement with extended / increased 3D sub-saturation region
    Patent number: 9572510
    Abstract: This invention provides a system and method that improves the sensitivity and localization capabilities of Magnetic Particle Imaging (MPI) by using combinations of time-varying and static magnetic fields. Combinations of magnetic fields can be used to distribute the signals coming from the magnetic particles among the harmonics and other frequencies in specific ways to improve sensitivity and to provide localization information to speed up or improve the signal-to-noise ratio (SNR) of imaging and/or eliminate the need for saturation fields currently used in MPI. In various embodiments, coils can be provided to extend the sub-saturation region in which nanoparticles reside; to provide a static field offset to bring nanoparticles nearer to saturation; to introduce even and odd harmonics that can be observed; and/or to introduce combinations of frequencies for more-defined observation of signals from nanoparticles.
    Type: Grant
    Filed: July 6, 2011
    Date of Patent: February 21, 2017
    Assignee: Mary Hitchcock Memorial Hospital
    Inventors: John B. Weaver, Ian Baker, Eric W. Hansen
  • SYSTEM AND METHOD FOR USE OF NANOPARTICLES IN IMAGING AND TEMPERATURE MEASUREMENT
    Publication number: 20110273176
    Abstract: This invention provides a system and method that improves the sensitivity and localization capabilities of Magnetic Particle Imaging (MPI) by using combinations of time-varying and static magnetic fields. Combinations of magnetic fields can be used to distribute the signals coming from the magnetic particles among the harmonics and other frequencies in specific ways to improve sensitivity and to provide localization information to speed up or improve the signal-to-noise ratio (SNR) of imaging and/or eliminate the need for saturation fields currently used in MPI. In various embodiments, coils can be provided to extend the sub-saturation region in which nanoparticles reside; to provide a static field offset to bring nanoparticles nearer to saturation; to introduce even and odd harmonics that can be observed; and/or to introduce combinations of frequencies for more-defined observation of signals from nanoparticles.
    Type: Application
    Filed: July 6, 2011
    Publication date: November 10, 2011
    Applicant: MARY HITCHCOCK MEMORIAL HOSPITAL
    Inventors: John B. Weaver, Ian Baker, Eric W. Hansen
  • System and method for use of nanoparticles in imaging and temperature measurement
    Patent number: 7994786
    Abstract: This invention provides a system and method that improves the sensitivity and localization capabilities of Magnetic Particle Imaging (MPI) by using combinations of time-varying and static magnetic fields. Combinations of magnetic fields can be used to distribute the signals coming from the magnetic particles among the harmonics and other frequencies in specific ways to improve sensitivity and to provide localization information to speed up or improve the signal-to-noise ratio (SNR) of imaging and/or eliminate the need for saturation fields currently used in MPI. In various embodiments, coils can be provided to extend the sub-saturation region in which nanoparticles reside; to provide a static field offset to bring nanoparticles nearer to saturation; to introduce even and odd harmonics that can be observed; and/or to introduce combinations of frequencies for more-defined observation of signals from nanoparticles.
    Type: Grant
    Filed: June 18, 2008
    Date of Patent: August 9, 2011
    Assignee: Mary Hitchcock Memorial Hospital
    Inventors: John B. Weaver, Ian Baker, Eric W. Hansen
  • SYSTEM AND METHOD FOR USE OF NANOPARTICLES IN IMAGING AND TEMPERATURE MEASUREMENT
    Publication number: 20090115415
    Abstract: This invention provides a system and method that improves the sensitivity and localization capabilities of Magnetic Particle Imaging (MPI) by using combinations of time-varying and static magnetic fields. Combinations of magnetic fields can be used to distribute the signals coming from the magnetic particles among the harmonics and other frequencies in specific ways to improve sensitivity and to provide localization information to speed up or improve the signal-to-noise ratio (SNR) of imaging and/or eliminate the need for saturation fields currently used in MPI. In various embodiments, coils can be provided to extend the sub-saturation region in which nanoparticles reside; to provide a static field offset to bring nanoparticles nearer to saturation; to introduce even and odd harmonics that can be observed; and/or to introduce combinations of frequencies for more-defined observation of signals from nanoparticles.
    Type: Application
    Filed: June 18, 2008
    Publication date: May 7, 2009
    Applicant: DARTMOUTH-HITCHCOCK CLINIC
    Inventors: John B. Weaver, Ian Baker, Eric W. Hansen