General Electric Company

Other

Case Western Reserve University

Hammersmith Imanet Limited

Ajit Shankaranarayanan

Jean Helen Brittain

Jeffrey L Duerk

Jonathan S Lewin

Michael Wendt

Steven D Wolff

Andres Carrillo

Scott David Wollenweber

Ravindra Mohan Manjeshwar

Rakesh Mullick

Floribertus P M Heukensfeldt Jansen

Philip James Beatty

Alexander Ganin

Jason Andrew Polzin

Kris Filip Johan Jules Thielemans

Evren Asma

Gaohong G Wu

Wei Sun

Suchandrima Banerjee

Eric Tzguang Han

Anja Brau

Systems and methods for reducing acoustic noise in a Magnetic Resonance Imaging (MRI) are provided. One method includes applying a labeling phase of an arterial spin labeling (ASL) pulse sequence to a region of interest, applying a three-dimensional (3D) radial pulse sequence to the region of interest to generate a tag image, applying a control phase of the ASL pulse sequence to the region of interest, and applying the 3D radial pulse sequence to the region of interest to generate a control image.

Magnetic resonance (MR) imaging generating perfusion images with arterial spin labeling (ASL) and 3D radial pulse sequences

A method for generating a magnetic resonance (MR) image includes acquiring MR data from each of a plurality of RF coils and applying a prospective motion correction method to the MR data for each RF coil including determining a set of motion measurements that include a scan plane orientation associated with each data point in the MR data. The MR data for each RF coil is divided into a plurality of scan plane orientation groups based on motion changes. A set of unaliasing coefficients is generated for each scan plan orientation group and applied to the MR data to synthesize data for each RF coil. The acquired MR data and synthesized data for each RF coil is combined to generate a scan plane orientation data set. Each scan plane orientation data set is combined to generate a complete k-space data set.

System and method for generating a magnetic resonance image using prospective motion correction and parallel imaging

A method and apparatus are provided for reducing motion related imaging artifacts. The method includes determining an internal motion for of two regions of the object, each region having a different level of motion, scanning the first region using a first scan protocol based on the motion, scanning a second region using a second different scan protocol based on the motion, and generating an image of the object based on the first and second regions.

Method and apparatus for reducing image artifacts

A method and system for improving image quality by correcting errors introduced by rotational motion of an object being imaged is provided. The object is associated with a fiducial mark. The method provides a computer executable methodology for detecting a rotation and selectively reordering, deleting and/or reacquiring projection data.

Reducing effects of rotational motion

A system and method for MR imaging is disclosed that includes displaying a series of MR images of an ROI in real-time and localizing a slice within the ROI. The method also includes using a parallel imaging technique to acquire gated MR data from the localized slice and reconstructing a prescribed fixed number of gated MR images of the localized slice.

System and method for real-time localization for gated MR imaging

The present invention is directed to slice selective magnetization preparation for moving table MRI. The present invention includes a method of magnetization preparation that takes into account patient movement or translation during the imaging process. The present invention adjusts or modifies the frequency at which magnetization preparation pulses are applied to offset the preparation pulse in space. This allows preparation pulses to be interleaved with imaging and enables magnetization preparation without sacrificing other imaging variables or parameters defined for the particular MR study. As such, contrast within a reconstructed image is improved.

Method and apparatus of slice selective magnetization preparation for moving table MRI

A method and system for improving image quality by correcting errors introduced by rotational motion of an object being imaged is provided (). The method provides a computer executable methodology for detecting a rotation () and selectively reordering (), deleting and/or reaquiring projection data ().

System and method for reducing effects of rotational motion

Growing community of inventors

Mountain View, CA, United States of America

Ajit Shankaranarayanan