Patents by Inventor Marinus J. A. M. Van Helvoort

Marinus J. A. M. Van Helvoort 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: 7667463
    Abstract: An RF receiver antenna (1), notably for use in an magnetic resonance imaging system for picking up magnetic resonance signals comprises a resonant pick-up circuit and communication unit (2) to transmit and/or receive data and including a transmit/receive antenna integrated in the resonant pick-up circuit.
    Type: Grant
    Filed: April 7, 2006
    Date of Patent: February 23, 2010
    Assignee: Koninklijke Philips Electronics N.V.
    Inventor: Marinus J. A. M. Van Helvoort
  • Patent number: 7602187
    Abstract: A radio frequency receive coil for receiving a magnetic resonance signal includes a radio frequency antenna. The radio frequency antenna includes one or more electrical conductors (72, 74, 76, 78, 172, 173, 176, 180, 252, 254), at least one of which is a substantially hollow conductor (72, 78, 172, 252, 254). At least one electrical component (100, 110, 110?, 110?, 140, 160, 200) is mounted to be shielded from interfering with the MR signal by disposing it inside the substantially hollow conductor. The at least one electrical component can be, for example, a battery (100, 160, 200), a storage capacitor (140), or coil electronics (110, 110?,110?).
    Type: Grant
    Filed: June 7, 2005
    Date of Patent: October 13, 2009
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Kai-Michael Luedeke, Christian Findeklee, Peter H. Notten, Marinus J. A. M. van Helvoort, Hans H. Tuithof
  • Patent number: 7514924
    Abstract: A radio frequency receive coil (50) includes an antenna (52, 52?) that is tuned to a magnetic resonance frequency to detect a magnetic resonance signal. Electronics (54) disposed on or with the antenna (52, 52?) as a unitary structure include compression circuitry (102, 114, 202, 214, 230, 330, 430, 530) that compresses the magnetic resonance signal at a gain controlled by a gain control signal to produce a compressed magnetic resonance signal. The electronics (54) generate a reduced dynamic range representation of the magnetic resonance signal based on the compressed magnetic resonance signal. The reduced dynamic range representation of the magnetic resonance signal is communicated off the receive coil.
    Type: Grant
    Filed: August 19, 2005
    Date of Patent: April 7, 2009
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Kai-Michael Luedeke, Volkmar Schulz, Marinus J. A. M. Van Helvoort, Jan Den Boef, Bert L. De Vries
  • Publication number: 20080272786
    Abstract: A radio frequency receive coil for receiving a magnetic resonance signal includes a radio frequency antenna. The radio frequency antenna includes one or more electrical conductors (72, 74, 76, 78, 172, 173, 176, 180, 252, 254), at least one of which is a substantially hollow conductor (72, 78, 172, 252, 254). At least one electrical component (100, 110, 110?, 110?, 140, 160, 200) is mounted to be shielded from interfering with the MR signal by disposing it inside the substantially hollow conductor. The at least one electrical component can be, for example, a battery (100, 160, 200), a storage capacitor (140), or coil electronics (110, 110?,110?).
    Type: Application
    Filed: June 7, 2005
    Publication date: November 6, 2008
    Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.
    Inventors: Kai-Michael Luedeke, Christian Findeklee, Peter H. Notten, Marinus J.A.M. van Helvoort, Hans H. Tuithof
  • Patent number: 7443163
    Abstract: A low profile radio frequency coil (32, 44, 441, 442, 443) for use in a magnetic resonance imaging system includes a low profile antenna (34, 102, 202, 302) that is configured to resonate at about a magnetic resonance frequency of the magnetic resonance imaging system. A generally planar inductor (110, 112, 210, 240, 310) is electrically connected or coupled with the low profile antenna. The generally planar inductor provides selected frequency filtering of a radio frequency signal received by or transmitted by the low profile antenna.
    Type: Grant
    Filed: August 19, 2005
    Date of Patent: October 28, 2008
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Marcel Warntjes, Marinus J. A. M. Van Helvoort, Steven M. Koenig, Thomas Chmielewski
  • Publication number: 20080204027
    Abstract: A radio frequency receive coil (50) includes an antenna (52, 52?) that is tuned to a magnetic resonance frequency to detect a magnetic resonance signal. Electronics (54) disposed on or with the antenna (52, 52?) as a unitary structure include compression circuitry (102, 114, 202, 214, 230, 330, 430, 530) that compresses the magnetic resonance signal at a gain controlled by a gain control signal to produce a compressed magnetic resonance signal. The electronics (54) generate a reduced dynamic range representation of the magnetic resonance signal based on the compressed magnetic resonance signal. The reduced dynamic range representation of the magnetic resonance signal is communicated off the receive coil.
    Type: Application
    Filed: August 19, 2005
    Publication date: August 28, 2008
    Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.
    Inventors: Kai-Michael Luedeke, Volkmar Schulz, Marinus J. A. M. Van Helvoort, Jan Den Boef, Bert L. De Vries
  • Patent number: 7307422
    Abstract: An MRI system (1) comprises a housing (10) defining an examination space (2) for receiving a body for examination, a patient table (3) being displaceable into and out of the examination space (2), a magnetic field generating system (4) for generating a magnetic field in the examination space (2), and an electromagnetic resonance receive system (5) which comprises a set of dedicated receive coils (20). According to the invention at least one dedicated receive coil (20) is fixedly attached to the housing (10).
    Type: Grant
    Filed: November 4, 2004
    Date of Patent: December 11, 2007
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Marinus J. A. M. Van Helvoort, Robert P. Kleihorst, Diana M. F. Geraats