Patents Assigned to IGC-Medical Advances, Inc.
  • Patent number: 7251521
    Abstract: A motion sensing MRI coil allows correction of motion-induced image artifacts by the MRI machine or on a machine independent basis using correction circuitry associated with the coil.
    Type: Grant
    Filed: November 19, 2003
    Date of Patent: July 31, 2007
    Assignee: IGC Medical Advances, Inc.
    Inventor: Derek Seeber
  • Patent number: 6900637
    Abstract: A phase array coil uses asymmetric loops and selective overlapping to provide a more uniform field sensitivity to magnetic flux passing through the surface defined by multiple such phased array loops.
    Type: Grant
    Filed: March 19, 2004
    Date of Patent: May 31, 2005
    Assignee: IGC Medical Advances, Inc.
    Inventor: Derek A. Seeber
  • Patent number: 6867593
    Abstract: A modular lower coil provides for a head, a vascular and, a thoracic/lumbar element that may interfit or be separated to provide individual imaging of these areas or a combined imaging region stretching from the head to the lower spine. A switch box allows individual ones of these elements to be connected to the MRI machine if necessary because of a limitation of inputs to the machine and provides for decoupling currents to minimize interference between the coil elements when one element is being used.
    Type: Grant
    Filed: November 25, 2003
    Date of Patent: March 15, 2005
    Assignee: IGC-Medical Advances, Inc.
    Inventors: Ashok Menon, Derek Seeber, Jovan Jevtic
  • Patent number: 6812701
    Abstract: A phased array coil providing spatial discrimination for simultaneous spin acquisition maximizes transverse and longitudinal acceleration through the use of loops having boundaries tipped to the longitudinal axis.
    Type: Grant
    Filed: November 22, 2002
    Date of Patent: November 2, 2004
    Assignee: IGC - Medical Advances, Inc.
    Inventor: Derek Seeber
  • Patent number: 6798204
    Abstract: A local coil for magnetic resonance imaging equipment employs mirror conductors on opposite sides of an insulating substrate to produce lower resistance, higher Q and improved signal-to-noise ratio for a given foil thickness.
    Type: Grant
    Filed: October 9, 2002
    Date of Patent: September 28, 2004
    Assignee: IGC - Medical Advances, Inc.
    Inventors: Derek Seeber, Velibor Pikelja
  • Patent number: 6781379
    Abstract: A cable routing system for an MRI coil having multiple loops and multiple signal cables provides a non-resonant conductive ring surrounding the loops and grounded to define a low electrical field region along which the signal cables may be routed for reduced interference.
    Type: Grant
    Filed: August 22, 2002
    Date of Patent: August 24, 2004
    Assignee: IGC-Medical Advances, Inc.
    Inventors: Velibor Pikelja, Derek Seeber, Jovan Jevtic, Ashok Menon, William T. Johnson, Jr.
  • Patent number: 6762606
    Abstract: A head coil for magnetic resonance imaging may be shortened longitudinally to provide for better access by a patient. Extension of the coil may be performed after the positioning of the patient's head significantly simplifying patient positioning with respect to the coil. A portion of a conductor support sliding over the patient's head removable to allow endotracheal tubes or the like to remain undisturbed.
    Type: Grant
    Filed: November 22, 2002
    Date of Patent: July 13, 2004
    Assignee: IGC-Medical Advances, Inc.
    Inventors: Jovan Jevtic, Ashok Menon, Derek Seeber, Matthew J. Mercier, Steven M. Zwolinski, Matthias Gyori
  • Patent number: 6727701
    Abstract: A local coil for magnetic resonance imaging employs a loop divided by a shunting conductor which reduces sensitivity and field strength at one end of the loop to provide improved homogeneity for different coil configurations.
    Type: Grant
    Filed: March 5, 2003
    Date of Patent: April 27, 2004
    Assignee: IGC Medical Advances, Inc.
    Inventors: Jovan Jevtic, Derek Seeber, Ashok Menon
  • Patent number: 6664465
    Abstract: A floating shield current trap provides two resonance loops formed of split concentric tubular conductors joined radially at their axial ends. Adjustment of the separation of these loops provides a change in coupling between the loops effecting a simplified tuning of the resonance of the trap for different expected frequencies of interfering shield current.
    Type: Grant
    Filed: October 9, 2002
    Date of Patent: December 16, 2003
    Assignee: IGC Medical Advances, Inc.
    Inventor: Derek Seeber
  • Patent number: 6605775
    Abstract: A floating shield current trap provides first and second concentric tubular conductors electrically connected to provide a resonance-induced high impedance of current flow in a path consisting of the inner and outer conductors and their junctions thereby suppressing coupled current flow on a shield of a conductor contained within the first inner tubular conductor.
    Type: Grant
    Filed: May 13, 2002
    Date of Patent: August 12, 2003
    Assignee: IGC-Medical Advances, Inc.
    Inventors: Derek Seeber, Ashok Menon, Jovan Jevtic
  • Patent number: 6438402
    Abstract: A flexible peripheral coil for magnetic resonance imaging provides a tapered volume conforming to a patient through the use of multiple flexible leaves of decreasing combined length which enclose progressively smaller cylindrical areas while maintaining correct coil orientation. A freestanding foot coil may be placed over the patient's foot with toes passing through an aperture in the coil to complete the scanning coverage area. Straps allow the various coil leaves to accommodate different body sizes effectively varying the taper of the coil.
    Type: Grant
    Filed: November 12, 1998
    Date of Patent: August 20, 2002
    Assignee: IGC-Medical Advances, Inc.
    Inventors: Ralph Hashoian, Janette A. Bluma