General Electric Company

Other

Ge Medical Systems Technology Company, LLC

Robert Donald Peters

Ajeetkumar Gaddipati

Joseph K Maier

Michael J Radziun

Kevin Matthew Koch

Weitian Chen

Michael R Hartley

Zachary Slavens

R Scott Hinks

Daniel H Wier

Dennis R Wear

Jerry J Nelson

Michael E Edson

Edgardo C Diaz

Von M Dawley

Albert C Cardoza

An apparatus for detecting and repairing a ring artifact in a multi-spectral magnetic resonance image includes an image processor, which is configured to obtain an off-resonance magnetic field map and a deblurred composite image, to calculate a spatial gradient of the image based on the magnetic field map, to kernel search the spatial gradient, to mask the image, based on the kernel search, in order to identify voxels affected by a ring artifact, and to apply a filter in order to smooth intensities of the voxels identified by the image mask.

Method and apparatus for ring artifact repair of magnetic resonance images

A method and apparatus for reducing vibration-related artifacts in diffusion weighted imaging determines a vibrational frequency of an MR system and modifies scan parameters such that vibrational frequencies induced on the MR system are inconsistent with the vibrational frequency of the MR system. The method and apparatus improves image quality of MR images acquired using diffusion weighted imaging techniques with the MR system. As such, modification and/or redesign of the MR system to reduce vibrational frequency interaction is reduced.

Method and apparatus for vibration-related artifact reduction

A method and apparatus for prescan phase correction analyzes the phase profile of the first echo sampled in a prescan and the phase profile corresponding to the lope echo of an impending FSE acquisition to determine appropriate phase correction settings of the FSE scan.

Method and apparatus for fast spin echo (FSE) prescan phase correction

An imaging technique is disclosed for multi-echo, magnetic resonance imaging that addresses amplitude modulations, such as those caused by T2 decay and stimulated echo refocusing, in acquired MR data. Acquired MR data is corrected by non-phase encoded data such that amplitude modulations in the echo signal are addressed. Reducing the effects of amplitude modulations in the echo signal reduces ghosting and thereby improves image quality.

Method and apparatus to correct amplitude modulation in multi-echo magnetic resonance imaging

A method and system of MR imaging is disclosed that enables PROPELLER imaging to be feasibly carried out independently of slice orientation or anatomy of interest. The invention is directed to the acquisition of blades of MR data that are rotated about a central region of k-space and reconstructing an image of arbitrary slice orientation from the blades of MR data that is substantially absent of radial ripple artifacts caused by phase aliasing from tissue outside the field of view in the slice plane.

Method and system of MR imaging with reduced radial ripple artifacts

A phase correction method for MR devices includes collecting non-phase encoded reference data, calculating phase coefficients, and then phase correcting the regular phase-encoded image dataset based on these coefficients. The phase correction method can be used for two dimensional or three dimensional FSE imaging and variants thereof. As the method is conducted after signal acquisition, it is considered a retrospective phase correction.

Method and system for retrospective phase correction for fast spin echo magnetic resonance imaging

By providing, for use in a repair-truck installation, a lighting bar including the combination of a lamp having a rectangular, spreading beam with a lamp having a round flooding beam, the combination being supported rotatably from a pole which is attachable to a truck on which the combination is being carried, displacing the lamp with the rectangular, spreading beam from the axis of the vertical supporting pole by a distance sufficient to permit the rectangular beam to illuminate a significantly large work area local to the truck while the lamp with the round beam is supported at a lesser distance from such axis to permit illumination of a work area remote from the truck, repair work, for example on a remote gas meter may be conducted simultaneously with related preparatory work at the truck without light switching or transporting, thus increasing the efficiency of the repair personnel and the accuracy of their work.

Growing community of inventors

Sussex, WI, United States of America

Robert Donald Peters