Scott Thomas Mansell, 7229315 Eagle Ridge Dr, Lyons, WI 53105

6375147, Apr 23, 2002

Sep 13, 1999

09/394853

Michael J. Radziun - Waterford WI
Scott T. Mansell - Waterford WI
David E. Dean - Hartland WI
Dewain A. Purgill - Waukesha WI

General Electric Company - Waukesha WI

F16M 100

248638, 248550

Apparatus which provides a barrier for vibrational energy between an MR imaging system and an associated horizontal support surface includes a stiff platform of substantial mass, which is disposed to carry the entire weight of the MR imaging system. The apparatus further includes a number of vibration isolation elements positioned to support the platform and the MR imaging system upon the horizontal support surface. Each of the isolation elements comprises an enclosure containing pressurized air which is disposed to dampen vibrations, in order to oppose the transmission of vibrations between the platform and the support surface. An air pressure regulator is coupled to respective isolation elements to maintain specified air pressure levels therein, in order to support the platform in selected spaced-apart orientation with respect to the horizontal support surface.

6396268, May 28, 2002

Oct 2, 2000

09/677410

Richard S. Hinks - Waukesha WI
Scott T. Mansell - Waterford WI
Michael J. Radziun - Waterford WI
Dewain A. Purgill - Waukesha WI
Anton M. Linz - Mukwonago WI
Darren L. Hallman - Clifton Park NY

GE Medical Systems Global Technology Company, LLC - Waukesha WI

G01V 300

324307, 324309, 324300

A magnetic resonance imaging device has a compensation circuit for compensating for magnetic disturbances therein. The compensation circuit includes a sensor for sensing magnetic field changes and generating a magnetic field change signal. The sensor is coupled to a control circuit that has a transfer function therein. The control circuit is used to generate a compensation signal in response to the magnetic field change signal. The compensation signal may be coupled to the compensation coils located by the first magnet portion and the second magnet portion of the device. Also, the compensation signal may produce a time-dependent bias or change the center frequency to cancel magnetic disturbances.

6414489, Jul 2, 2002

Dec 18, 1999

09/465256

David E. Dean - Hartland WI
Michael J. Radziun - Waterford WI
Scott T. Mansell - Waterford WI

General Electric Company - Waukesha WI

G01V 300

324318, 324322

Apparatus is provided for reducing the level of acoustic noise or energy which is received by an imaging subject located within the bore of an MR imaging system. The apparatus comprises a bridge fixed within the bore to support the subject during MR data acquisition, and further comprises a curved frame, usefully formed of fiberglass, which is removably insertable in the bore for placement upon the bridge. The frame, when in place upon the bridge, defines a space within the bore which is disposed to receive the imaging subject. The frame is covered by a layer of material, such as open cell foam, which is capable of absorbing substantial amounts of acoustic energy present in the bore. At the same time, the material is highly transmissive to RF signals required for MR data acquisition and avoids spurious RF signal generation which would add noise to MR data.

6433549, Aug 13, 2002

Nov 21, 2001

09/990667

David E. Dean - Hartland WI
David Glenn Lee - Milwaukee WI
Bruce D. Collick - Madison WI
Richard Scott Hinks - Waukesha WI
Michael J. Radziun - Waterford WI
Scott T. Mansell - Waterford WI
Donald Elroy Kosak - Menomonee Falls WI
John Edward Lorbiecki - Hubertus WI

GE Medical Systems Global Technology Company, LLC - Waukesha WI

G01V 300

324319, 324318, 324320

An apparatus for supporting a patient support bridge member in an MR system where a first end of the bridge is supported by an upright support member on a first side of an MR imaging bore and the bridge extends through the bore so that a second end of the bridge extends out a second side of the bore, the apparatus including a bracket mounted to an MR main magnet on the second side of the bore and extending upwardly to contact and support the bridge there above.

6437568, Aug 20, 2002

Oct 2, 2000

09/676945

William Alan Edelstein - Schenectady NY
Richard Philip Mallozzi - Clifton Park NY
Robert Arvin Hedeen - Clifton Park NY
Mark Lloyd Miller - Schenectady NY
Paul Shadforth Thompson - Stephentown NY
Robert Adolph Ackermann - Schenectady NY
Bruce Campbell Amm - Clifton Park NY
John Peter Fura - Ballston Lake NY
Mike James Radziun - Waterford WI
David Edward Dean - Hartland WI
Scott Thomas Mansell - Waterford WI
Dewain Anthony Purgill - Waukesha WI
Robert Michael Vavrek - Waukesha WI

General Electric Company - Schenectady NY

G01V 300

324318, 324309, 324319, 324322

A low noise imaging apparatus for producing Magnetic Resonance (MR) images of a subject and for substantially minimizing acoustic noise generated during imaging is provided. The imaging apparatus comprises a magnet assembly, a gradient coil assembly, and a rf coil assembly, wherein at least one of the magnet assembly, the gradient coil assembly and the rf coil assembly are configured to reduce the generation and transmission of acoustic noise.

6564900, May 20, 2003

Nov 22, 2000

09/721378

David Dean - Hartland WI
Robert Vavrek - Waukesha WI
Scott Mansell - Waterford WI

GE Medical Systems Global Technology Company, LLC - Waukesha WI

H02K 524

181202, 324200, 381 712

A technique for reducing acoustic noise emitted by a magnetic resonance imaging system includes providing energy dampening elements in the scanner, such as within the gradient coil assembly, between the gradient coil assembly and the primary magnet, and around the outer and inner peripheries of the primary magnet and RF coil. The elements may be formed to conform to the structures of the scanner, and may be tile-like elements which can be fitted to new scanners and retrofitted to existing equipment.

6636136, Oct 21, 2003

Dec 14, 2000

09/737084

Michael J. Radziun - Waterford WI
Scott T. Mansell - Waterford WI
Andrew T. Bollinger - Atlanta GA
Gregory A. Lehmann - Florence SC
Timothy J. Havens - Florence SC
Yu Wang - Clifton Park NY

GE Medical Systems Global Technology Company, LLC - Waukesha WI

H01F 500

335299, 335216

A mechanical stabilizer-tuned damper is attachable to the first upper magnet assembly of a high field open magnet, which magnet includes a first upper magnet assembly, a lower second magnet assembly and at least one non-magnetizable support beam therebetween. The mechanical stabilizer-tuned damper reduces the dynamic response of the magnet. A connecting device is provided which consists of a threaded rod mounted to an attachment bracket through a linear bearing and vibration mount. A series of non-magnetic and extremely low conductivity plates of various weights are attachable to the rod to change the mass and the tuning frequency of the damper. The location and size of the mechanical stabilizer-tuned damper are determined to balance the frequency of the field oscillation and physical room. The direction of orientation depends upon the direction of motion to be dampened or controlled.

6791325, Sep 14, 2004

May 28, 2003

10/250015

David Edwards Dean - Hartland WI
Mike James Radziun - Waterford WI
Scott Thomas Mansell - Waterford WI

GE Medical Systems Global Technology Company, LLC - Waukesha WI

G01V 300

324318, 324322

An MR system isolation impedance mismatch apparatus ( ) includes an impedance mismatch layer ( ). The impedance mismatch layer ( ) performs as a mechanical notch filter and isolates an MR system component ( ) from a surrounding structure ( ). A method of tuning the impedance mismatch apparatus ( ) includes determining a default notch filter frequency range. The impedance mismatch apparatus ( ) is formed and performs as a notch filter having the default notch filter frequency range. The impedance mismatch apparatus ( ) is installed and tested between the MR system component ( ) and the surrounding structure ( ). Vibrations are detected in the MR system component ( ) and in the surrounding structure ( ). The impedance mismatch apparatus is adjusted in response to the detected vibrations.