Emory University

Other

Xiaoping P Hu

Grum Teklemariam

Jianyu Lian

Sinyeob Ahn

Puneet Sharma

Diego R Martin

Daniel E Huddleston

Xiangchuan Chen

Nashiely Pineda-Alonso

Methods, systems and computer-readable storage mediums relate to imaging techniques of a region, for example, the brain, with magnetization transfer contrast (MTC&#xb0;) effects with less specific absorption rate (SAR). The methods, systems and computer-readable storage mediums may include acquiring MR image data from at least one magnetic resonance (MR) scan that includes a pre-pulse signal and a pulse sequence. The pre-pulse signal may be less than 500&#xb0;, e.g., from about 150&#xb0; to 425&#xb0;, and the pulse-sequence may be a gradient echo based sequence. The methods, systems and computer-readable storage mediums may include generating information associated with an image of at least one region of a subject. The information may include quantitative or qualitative information of a region of a brain. The quantitative information may include volume information, contrast to noise ratio information, number of voxels, as well as other information.

Methods, systems and computer readable storage media storing instructions for imaging and determining information associated with regions of the brain

A magnet primarily for use in MRI applications comprises a pair of poles oriented about a plane of symmetry parallel to each therebetween defining an air gap region, magnetic field sources secured on the surfaces of the poles opposite the air gap that have yokes disposed on them, the yokes connected to each other by returns so that the entire magnet assembly can form a closed magnetic flux circuit to substantially confine the magnetic fields generated by the apparatus in the air gap where an imaging region is formed to place subjects for the purposes of examination. The main assembly being cylindrical in geometry has permanent magnets for magnetic field sources that are composed of two regions, a central disk-like portion magnetized substantially along the axial direction and an outer ring-like region magnetized substantially along the radial direction extending axially to form part of the pole together producing a very efficient and even flux distribution throughout the entire magnet assembly with minimal flux leakage. A further means of reducing flux leakage is incorporated in the yokes which have two sections, a disk-like region and an ring-like section to enclose the permanent magnets. The poles are made of multiple sections with a central disk-like region and an outer ring-like region that is a combination of permanent magnets and high permeability materials. This magnet assembly can achieve 1.0 Tesla or greater magnetic fields for whole-body scanning without saturating the magnet pole and other structures.

Open MRI magnetic field generator

Provided are methods, systems and computer program products evaluating magnetic resonance (MR) signals from a sample. The methods and systems can be used to evaluate MR signals from various constituents (e.g., metabolites, macromolecules) of the sample.

Evaluating magnetic resonance spectra

Growing community of inventors

Tucker, GA, United States of America

Xiaoping P Hu