Patents by Inventor Jonas KAHN

Jonas KAHN 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).

  • Method and apparatus for accelerated magnetic resonance imaging
    Patent number: 11937908
    Abstract: A method of performing magnetic resonance imaging of a body includes a) immerging the body in a static and substantially uniform magnetic field; b) exciting nuclear spins inside the body using at least one radio-frequency pulse; c) applying to the body a time-varying magnetic field gradient defining at least one trajectory (ST) in k-space and simultaneously acquiring samples of a magnetic resonance signal so as to perform a pseudo-random sampling (KS) of the k-space; and d) applying a sparsity-promoting nonlinear reconstruction algorithm for reconstructing a magnetic resonance image of the body; wherein, at least in a low-spatial frequency region of the k-space, the distance between any two adjacent points belonging to a same trajectory is lower than 1/FOV, FOV being the size of a field of view of the reconstructed image. A magnetic resonance imaging apparatus for carrying out such a method is also provided.
    Type: Grant
    Filed: September 6, 2018
    Date of Patent: March 26, 2024
    Assignees: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES PARIS, FRANCE, UNIVERSITÉ PARIS-SACLAY, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE
    Inventors: Nicolas Chauffert, Philippe Ciuciu, Jonas Kahn, Carole Lazarus, Alexandre Vignaud, Pierre Weiss
  • METHOD AND APPARATUS FOR ACCELERATED MAGNETIC RESONANCE IMAGING
    Publication number: 20200205692
    Abstract: A method of performing magnetic resonance imaging of a body includes a) immerging the body in a static and substantially uniform magnetic field; b) exciting nuclear spins inside the body using at least one radio-frequency pulse; c) applying to the body a time-varying magnetic field gradient defining at least one trajectory (ST) in k-space and simultaneously acquiring samples of a magnetic resonance signal so as to perform a pseudo-random sampling (KS) of the k-space; and d) applying a sparsity-promoting nonlinear reconstruction algorithm for reconstructing a magnetic resonance image of the body; wherein, at least in a low-spatial frequency region of the k-space, the distance between any two adjacent points belonging to a same trajectory is lower than 1/FOV, FOV being the size of a field of view of the reconstructed image. A magnetic resonance imaging apparatus for carrying out such a method is also provided.
    Type: Application
    Filed: September 6, 2018
    Publication date: July 2, 2020
    Inventors: Nicolas CHAUFFERT, Philippe CIUCIU, Jonas KAHN, Carole LAZARUS, Alexandre VIGNAUD, Pierre WEISS