magnetic resonance spectroscopy


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Related to magnetic resonance spectroscopy: Nuclear magnetic resonance spectroscopy

mag·net·ic res·o·nance spec·tros·co·py

detection and measurement of the resonant spectra of molecular species in a tissue or sample.

magnetic resonance spectroscopy

A magnetic resonance technique in which a sample is placed in a strong  homogeneous magnetic field and stimulated with radio frequency electromagnetic energy. If the field is uniform throughout the sample, similar nuclei will contribute a particular frequency component to the detected response signal, irrespective of their position in the sample. Because nuclei of different elements resonate at different frequencies, a chemical can be analysed by parsing the MR response signal into its frequency components.

magnetic resonance spectroscopy

An advanced method of chemical analysis using a technique similar to that employed in nuclear magnetic resonance imaging. The method is based on the fact that the electrons in a molecule shield the nucleus to some extent from the strong applied external field, causing different atoms to absorb at slightly different frequencies. It is applicable to molecules in the living body or in other organisms. The method has, for instance, been used to prove that the structure of the protein capsid surrounding the genome of HIV consists of seven alpha helices, two beta-hairpins and a single exposed loop.
References in periodicals archive ?
Proton magnetic resonance spectroscopy in pediatric neuroradiology.
Diagnostic yield of combined magnetic resonance spectroscopy and diffusion weighted imaging in intracranial neoplasms.
A proton magnetic resonance spectroscopy ([sup.1H] MRS) study," Polish Journal of Radiology, vol.
Ye et al., "Ex vivo [sup.1]H nuclear magnetic resonance spectroscopy reveals systematic alterations in cerebral metabolites as the key pathogenetic mechanism of bilirubin encephalopathy," Molecular Brain, vol.
Long-term normal-appearing brain tissue monitoring after irradiation using proton magnetic resonance spectroscopy in vivo : Statistical analysis of a large group of patients.
Inverse correlation between choline magnetic resonance spectroscopy signal intensity and the apparent diffusion coefficient in human glioma.
Magnetic resonance spectroscopy (MRS) is a non-invasive imaging technique that provides in vivo quantification of a number of metabolites in the brain.
Proton magnetic resonance spectroscopy was used to measure liver fat, and subcutaneous abdominal and visceral fat were measured by magnetic resonance imaging (MRI).
The authors conclude that noninvasive in vivo magnetic resonance spectroscopy measurement of GABA and NAA may prove to be a useful tool for detecting presymptomatic effects of Mn neurotoxicity.
Signal processing in magnetic resonance spectroscopy with biomedical applications.
Using H-nuclear magnetic resonance spectroscopy and statistical models, researchers sought to identify 'biomarkers' present in erythrocytes to distinguish between women with normal pregnancy and those with PE.
Single voxel stimulated echo acquisition mode (STEAM) acquisition of the right lentiform nucleus for magnetic resonance spectroscopy revealed diminished N-acetylaspartate (NAA), suggestive of neuronal loss/dysfunction (Fig.

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