Patents by Inventor Glen R. Morrell

Glen R. Morrell 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).

  • Linear phase microstrip radio frequency transmit coils
    Patent number: 9057767
    Abstract: Systems, devices and methods provide an RF coil which produces a field having linear phase variation across an imaging volume. In one embodiment, a coil comprises multiple microstrip elements configured to have an increased effective electrical length. This increase in electrical length allows for a larger linear phase shifts over the length of the microstrip element which in turn increases linear phase variation capabilities. This may be accomplished by increasing the effective dielectric properties of the microstrip element. Increasing the effective dielectric may be accomplished by utilizing distributed capacitors along the length of a microstrip element (e.g. lumped element capacitors), by altering the materials used to fabricate the microstrip element, etc. Additionally, increasing the effective dielectric may be accomplished using a combination of these means.
    Type: Grant
    Filed: May 7, 2012
    Date of Patent: June 16, 2015
    Assignee: The University of Utah
    Inventors: J. Rock Hadley, Dennis L. Parker, Glen R. Morrell
  • Linear Phase Microstrip Radio Frequency Transmit Coils
    Publication number: 20120280685
    Abstract: Systems, devices and methods provide an RF coil which produces a field having linear phase variation across an imaging volume. In one embodiment, a coil comprises multiple microstrip elements configured to have an increased effective electrical length. This increase in electrical length allows for a larger linear phase shifts over the length of the microstrip element which in turn increases linear phase variation capabilities. This may be accomplished by increasing the effective dielectric properties of the microstrip element. Increasing the effective dielectric may be accomplished by utilizing distributed capacitors along the length of a microstrip element (e.g. lumped element capacitors), by altering the materials used to fabricate the microstrip element, etc. Additionally, increasing the effective dielectric may be accomplished using a combination of these means.
    Type: Application
    Filed: May 7, 2012
    Publication date: November 8, 2012
    Applicant: University of Utah Research Foundation
    Inventors: J. Rock Hadley, Dennis L. Parker, Glen R. Morrell
  • Magnetic resonance imaging using three-dimensional spectral-spatial excitation
    Patent number: 5578921
    Abstract: Using 3-D spectral-spatial excitation, the center frequency of the spectral passband can be varied as a function of two spatial coordinates. Such variation could be tailored to field map data to compensate for B.sub.0 shifts. The 3-D excitation has 3-D spiral trajectories in k-space.
    Type: Grant
    Filed: January 10, 1995
    Date of Patent: November 26, 1996
    Assignee: Board of Trustees of the Leland Stanford Junior University
    Inventor: Glen R. Morrell