Leland Stanford Junior University

General Electric Company

Beth Israel Deaconess Medical Center, Inc.

Charles McKenzie

Scott Brian Reeder

Huanzhou Yu

Jean Helen Brittain

Ann Shimakawa

Angel R Pineda

Norbert Joseph Pelc

Anja Brau

Methods and systems are provided for processing a magnetic resonance images. In one embodiment, first and second sets of lines of magnetic resonance imaging signals are acquired. The acquired sets of lines have readout gradients that are reversed in polarity with respect to one another. A two-dimensional phase error is determined using the first and second set of lines.

Method and system to perform phase correction for species separation in magnetic resonance imaging

A method for generating a calibrated parallel magnetic resonance image is provided in a manifestation of the invention. A magnetic resonance imaging excitation is applied. A plurality of echoes at different echo times (TE) is acquired. The acquired plurality of echoes from different echo times is used to create a chemical shift corrected calibration map.

Calibration maps for parallel imaging free of chemical shift artifact

A method for generating a magnetic resonance images is provided. A first species signal for a first species is generated from magnetic resonance data. A second signal is generated from the magnetic resonance data. The first species signal is combined with the second signal to provide a recombined image. The recombined image may be displayed.

MRI methods for combining separate species and quantifying a species

A method of separating signals from at least two species in a body using echo-coherent time magnetic resonance imaging is provided. A plurality of echo signals is acquired at acquisition times optimized based on the noise properties of images with different variance with possibly correlated noise resulting in possibly asymmetrically positioned images with respect to an echo time. The plurality of echo signals is combined iteratively by using a maximum likelihood decomposition algorithm for non-identically distributed noise.

Maximum likelihood estimator in the presence of non-identically distributed noise for decomposition of chemical species in MRI

A method for generating a self-calibrating parallel multiecho magnetic resonance image is provided. A magnetic resonance imaging excitation is applied. A first echo at a first echo time in a first pattern is acquired. A second echo at a second echo time different from the first echo phase in a second pattern different from the first pattern is acquired. The acquired first echo and acquired second echo are used to generate an image in an image pattern, wherein none of the acquired echoes for generating the image have the same pattern as the image pattern.

Self-calibration methods for parallel imaging and multipoint water-fat separation methods

A method for generating dynamic magnetic resonance images is provided. A cyclical magnetic resonance imaging excitation is applied for a plurality of cycles at a cycle rate. A plurality of magnetic resonance image echoes is acquired for each cycle. A plurality of frames of images is generated from the acquired plurality of magnetic resonance echoes at a frame rate that is at least twice the cycle rate, wherein each frame of the plurality of frames is generated from a plurality of echoes and wherein some of the plurality of frames are generated from magnetic resonance image echoes of adjacent cycles.

Sliding window reconstruction and phase/field map updating for dynamic chemical shift imaging

A method for generating a magnetic resonance image is provided. A magnetic resonance imaging excitation is applied for a plurality of cycles at a cycle rate. A plurality of magnetic resonance image echoes is acquired for each cycle. A decay map is estimated from the plurality of magnetic resonance image echoes for each cycle. The estimated decay map is used to generate an image for at least two different species.

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London, Canada

Charles McKenzie