Patents by Inventor Karl Landheer

Karl Landheer 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).

  • Techniques for operating magnetic resonance imagers to crush returns from unwanted coherence pathways
    Patent number: 10768250
    Abstract: Techniques for crushing unwanted coherence pathways during magnetic resonance spectral (MRS) measurements include receiving first data that indicates a sequence of RF pulses with one or more target coherence pathways of spin states for a subject that has at least N?1 coupled spin states of interest. A negative, non-integer amplitude is determined for at least one intervening crusher pulse emitted from at least one spatial gradient magnetic coil. The at least one intervening crusher pulse has a duration less than a time between successive pulses of the sequence of RF pulses; and, the intervening crusher pulse de-phases unwanted coherence pathways. A MRS device is operated using the intervening crusher pulse and the sequence of RF pulses.
    Type: Grant
    Filed: December 18, 2018
    Date of Patent: September 8, 2020
    Assignee: THE TRUSTEES OF COLUMBIA UNIVERSITY IN THE CITY OF NEW YORK
    Inventors: Karl Landheer, Christoph Juchem
  • Techniques For Operating Magnetic Resonance Imagers to Crush Returns from Unwanted Coherence Pathways
    Publication number: 20190204400
    Abstract: Techniques for crushing unwanted coherence pathways during magnetic resonance spectral (MRS) measurements include receiving first data that indicates a sequence of RF pulses with one or more target coherence pathways of spin states for a subject that has at least N?1 coupled spin states of interest. A negative, non-integer amplitude is determined for at least one intervening crusher pulse emitted from at least one spatial gradient magnetic coil. The at least one intervening crusher pulse has a duration less than a time between successive pulses of the sequence of RF pulses; and, the intervening crusher pulse de-phases unwanted coherence pathways. A MRS device is operated using the intervening crusher pulse and the sequence of RF pulses.
    Type: Application
    Filed: December 18, 2018
    Publication date: July 4, 2019
    Inventors: Karl Landheer, Christoph Juchem