Patents by Inventor Jacco Douwe van Beek

Jacco Douwe van Beek 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).

  • Shimming procedure that includes determination of the target field by optimization in a parameter space of reduced dimensionality
    Patent number: 9817097
    Abstract: A method for homogenizing the static magnetic field with a distribution B0(r) in the active volume of a magnetic resonance apparatus having a number N of shim coils defines a target field distribution B0T(r) using a filter method in which a norm of the shim currents is influenced by means of filter factors. An optimization procedure works in a parameter space having M control parameters, wherein 2?M<N. One of the control parameters is used as a weighting parameter for modification of a spatial weighting function and another control parameter is used to control the filter factors. Using this method the hardware limitations can be taken into account when determining the target field distribution, without a significant increase in the computational effort to determine the target field distribution during optimization.
    Type: Grant
    Filed: September 23, 2014
    Date of Patent: November 14, 2017
    Assignee: Bruker BioSpin AG
    Inventors: Jacco Douwe van Beek, Thomas Speck
  • Shimming procedure that includes determination of the target field by optimization in a parameter space of reduced dimensionality
    Publication number: 20150102809
    Abstract: A method for homogenizing the static magnetic field with a distribution B0(r) in the active volume of a magnetic resonance apparatus having a number N of shim coils defines a target field distribution B0T(r) using a filter method in which a norm of the shim currents is influenced by means of filter factors. An optimization procedure works in a parameter space having M control parameters, wherein 2?M<N. One of the control parameters is used as a weighting parameter for modification of a spatial weighting function and another control parameter is used to control the filter factors. Using this method the hardware limitations can be taken into account when determining the target field distribution, without a significant increase in the computational effort to determine the target field distribution during optimization.
    Type: Application
    Filed: September 23, 2014
    Publication date: April 16, 2015
    Inventors: Jacco Douwe van Beek, Thomas Speck