General Electric Company

Ge Medical Systems Global Technology Company, LLC

Other

Bruce David Collick

Richard Scott Hinks

Frederick Joseph Frigo

Michael R Hartley

Bryan James Mock

Kevin Franklin King

Scott David Wollenweber

Charles William Stearns

Yuji Inoue

Joseph K Maier

Dan Xu

Kazuya Hoshino

Phillip William Eckels

David E Dean

Scott Thomas Mansell

Seung-Kyun Lee

Michael J Radziun

Joseph Edward Piel, Jr

Anton Max Linz

John Edward Lorbiecki

Eric William Fiveland

Louis Martin Frigo

William Todd Peterson

Bo Pettersson

Tejaswini Shubhachint

Donald Elroy Kosak

Laura Armstrong

David Glenn Lee

Kazuhiko Hayakawa

Wanxian Wang

A magnetic resonance imaging system is disclosed. The magnetic resonance imaging system includes a magnet core that generates a magnetic field including a plurality of magnetic field lines. The magnetic resonance imaging system also includes a plurality of gradient coils disposed along the magnet core and a plurality of gradient amplifiers. Further, the magnetic resonance imaging system includes a plurality of bus-bar conductors coupling a corresponding gradient coil of the plurality of gradient coils and a corresponding gradient amplifier of the plurality of gradient amplifiers. The plurality of bus-bar conductors is disposed along at least one of a first path extending along the plurality of magnetic field lines and a second path extending along a substantially linear direction from the corresponding gradient coil to a fringe region of the magnetic field to reduce an effect of Lorentz force on the plurality of bus-bar conductors.

Magnetic resonance imaging system and an associated method thereof

A target object for aligning a multi-modality imaging system includes a body having a cavity therein, a first imaging source being disposed within the cavity, the first imaging source including a body having a cavity defined therein and an emission responsive material disposed within the first imaging source cavity, the first imaging source having a first shape, and a second imaging source being disposed within the cavity, the second imaging source including a body having a cavity defined therein and a magnetic resonance responsive material disposed within the second imaging source cavity, the second imaging source having a second shape that is different than the first shape. A method of aligning a multi-modality imaging system is also provided.

Method and apparatus for aligning a multi-modality imaging system

A computer is programmed to acquire calibration data from a calibration scan, the calibration data configured to characterize high order eddy current (HOEC) generated magnetic field error of an imaging system. The computer is also programmed to process the calibration data to generate a plurality of basis coefficients and a plurality of time constants and to calculate a plurality of basis correction coefficients based on the plurality of basis coefficients, the plurality of time constants, and gradient waveforms in a given pulse sequence. The computer is further programmed to execute a diffusion-weighted imaging scan that comprises application of a DW-EPI pulse sequence to acquire MR data from an imaging subject and reconstruction of an image based on the acquired MR data. The computer is also programmed to apply HOEC-generated magnetic field error correction during application of the DW-EPI pulse sequence configured to reduce HOEC-induced distortion in the reconstructed image.

System and method for prospective correction of high order eddy-current-induced distortion in diffusion-weighted echo planar imaging

A nearest neighbor phase correction technique is implemented to reduce image artifacts due to phase errors in data acquired in an EPI scan. Image quality for EPI applications, such as DWI, DTI, and fMRI, is improved.

Method and system for image artifact reduction using nearest-neighbor phase correction for echo planar imaging

A method and system of MR imaging where variable readout gradient filtering (VRGF) is carried out after MR data acquired during gradient field transitions has been phase-corrected. Thus, phase errors can be removed prior to VRGF re-sampling of the MR data. As such, image artifacts due to phase errors can be reduced, improving image fidelity and reducing ghosting especially for poorly calibrated systems.

Method and system of MR imaging with variable readout gradient filtering

The present invention provides a system and method of increasing the sampling rate for MR data acquisition. By implementing ensemble sampling techniques, the present invention provides higher data sampling rates that are useful for several MR data acquisition applications including Echo Planar Imaging, Functional Magnetic Resonance Imaging, and Sensitivity Encoding Imaging (SENSE) techniques. By multiplying an MR signal by a series of pure sinusoids having the same frequency but shifted by an incremental phase, the MR signal may be separated into a number of channels which can be sampled at lower rates by analog-to-digital converters. The output from the converters may then be reconstructed using one of a number of interpolation techniques to create a single digital channel with increased bandwidth. The single channel with increased bandwidth may then be used to acquire MR data with an improved sampling rate.

Method and apparatus of MR data acquisition using ensemble sampling

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.

MR bridge support

An MRI system performs a real-time scan in which image frames are produced as the image is moved to different locations in the patient. The location at which each set of image data is acquired is compared, and image data acquired at the same location are combined to improve image quality. An autonex feature enables averaging of successive image data acquisitions and a frame rate feature enables combining of partial NEX acquisitions.

Method for controlling data acquisition and image reconstruction during

An open architecture magnetic resonance imaging permanent magnet assembly with moveable magnets and adjustable field inclination with automatic magnetic field homogeneity shimming to enhance imaging and positioning of the magnetic field about the portion of the patient to be imaged while enabling interventional physician access.

Adjustable interventional magnetic resonance imaging magnet

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Madison, WI, United States of America

Bruce David Collick