Patents by Inventor Klaas P. Pruessmann

Klaas P. Pruessmann 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).

  • Patent number: 7208951
    Abstract: A novel magnetic resonance (MR) imaging or spectroscopy method is presented, in which a main magnetic field is generated in an object by a main magnet and superimposed magnetic fields and adiofrequency fields are generated according to an MR sequence for forming images or spectra. Object signals are acquired from the object with at least one object detector during execution of the MR sequence. Further, additional data are acquired from at least one monitoring field probe positioned in the vicinity of and surrounding the object, during execution of the MR sequence. The additional data from the monitoring field probes are used for adjusting the MR sequence such as to correct for imperfections in the field response of the object detectors, and the additional data from the monitoring field probes are used in conjunction with the object signals for reconstruction of the images or spectra.
    Type: Grant
    Filed: March 31, 2005
    Date of Patent: April 24, 2007
    Assignees: Universitat Zurich Prorektorat Forschung, ETH Zurich, ETH Transfer
    Inventors: Klaas P. Pruessmann, Nicola De Zanche
  • Patent number: 6326786
    Abstract: The invention relates to a method for obtaining images by means of magnetic resonance (MR) of an object placed in a static magnetic field which method includes simultaneous measurement of a number sets of MR signals by application gradients and an array of receiver coils, reconstruction of a number of receiver coil images from the sets MR signals measured and reconstruction of a final image from a distant dependent sensitivity of the receiver coils and the first plurality of receiver coil images. In order to reduce the acquisition time the number of phase encoding steps corresponding to the phase-encoding gradient is reduced with a reduction factor compared to standard Fourier imaging, while a same field of view is maintained as in standard Fourier imaging. In this way fast cardiac imaging may be possible.
    Type: Grant
    Filed: December 17, 1999
    Date of Patent: December 4, 2001
    Assignee: U.S. Philips Corporation
    Inventors: Klaas P. Pruessmann, Markus Weiger, Markus B. Scheidegger, Peter Boesiger
  • Patent number: 6285900
    Abstract: The invention relates to a magnetic resonance method for determining a perfusion image of a portion, which method comprises the following steps: generation of a control pulse sequence in a first portion of the body and measurement of a control data set by generation of an MR-image sequence for imaging of an third portion of the body, generation of a labelling pulse sequence in a second portion of the body wherein a fluid flows towards the third portion, and measurement of the labelled data set by generation of the MR-image sequence for imaging the third portion of the body, and reconstruction of the perfusion image of the fluid in a mass of the third portion of the body from a combination of the control data set and the labelled data set.
    Type: Grant
    Filed: December 10, 1998
    Date of Patent: September 4, 2001
    Assignee: U.S. Philips Corporation
    Inventors: Matthias Stuber, Klaas P. Pruessmann, Xavier G. Golay, Markus B. Scheidegger, Peter Boesiger
  • Patent number: 6252399
    Abstract: The invention relates to a method for determining an image of a portion of a body by means of magnetic resonance (MR), which method comprises a step for rotating a magnetization of spins in a selected portion of the body and by generating an RF pulse in a selected slice. The RF pulse comprises a concatenation of a selective first RF pulse and a second selective RF pulse.
    Type: Grant
    Filed: December 10, 1998
    Date of Patent: June 26, 2001
    Assignee: U.S. Philips Corporation
    Inventors: Klaas P. Pruessmann, Matthias Stuber, Xavier G. Golay, Henryk M. Faas, Peter Boesiger