General Electric Company

Napapon Sailasuta

Ralph Eugene Hurd

Ileana Hancu

Patrick L Le Roux

James S Tropp

Susan Jean Kohler

A method for increasing sensitivity and/or specificity of a magnetic resonance spectroscopy imaging technique for detecting a neurodegenerative disease is provided. The method includes acquiring magnetic resonance spectroscopy data from the brain of a subject, while suppressing certain metabolites in the spectrum via a data acquisition protocol, to improve quantification accuracy for the remaining metabolites, and quantifying a metabolite concentration or a metabolite concentration ratio from the spectral data as an indicator of the neurodegenerative disease.

Methods and systems for detection and monitoring of neurodegenerative diseases using magnetic resonance spectroscopy

A technique is set forth for MR spectroscopy that is capable of reducing signal overlap between metabolite signals for improved clinical analysis of metabolite content. The technique includes varying an echo time across a scanning dimension. Once a span of echo time for an acquisition dimension is determined, and the number of acquisition data points is known, a variance between echo times can be determined. A pulse sequence with differing echo times is then applied for each frame, and after data is acquired, an image is reconstructed that significantly improves metabolite signal separation.

Method and apparatus for improved metabolite signal separation in MR spectroscopy

Chemical shift error in proton magnetic resonance spectroscopy is reduced by applying a volume excitation pulse sequence such as PRESS and very selective out-of-volume saturation pulses to limit that volume to a volume-of-interest free of the misregistration errors associated with the excitation sequence. The resulting volume is then only limited by the very small chemical shift misregistration of the very selective saturation pulses.

Magnetic resonance spectroscopic imaging having reduced chemical shift

An MRS or MRI scan is performed by interleaving pulse sequences which acquire MR spectra or images from different locations in a subject. Parameters for the pulse sequence used to acquire MR data at each location are dynamically changed during the scan to optimize the MR measurements.

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Morgan Hill, CA, United States of America

Napapon Sailasuta