magnetic resonance spectroscopy


Also found in: Dictionary, Thesaurus, Acronyms, Encyclopedia.
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 ?
Localized proton magnetic resonance spectroscopy of the brain in children infected with human immunodeficiency virus with and without encephalopathy.
Wilson MA, Jones AJ, Williamson B (1978) Nuclear magnetic resonance spectroscopy of humic materials.
Magnetic resonance spectroscopy determined that neuropsychological deficits in the children correlated with hippocampal metabolite alterations, low oxygen saturation, and body mass index (BMI).
The researchers then compared results from detailed pathologic examinations and from one-dimensional proton magnetic resonance spectroscopy (PMRS) performed at 360 MHz.
They reviewed new ways to analyze data from MRI scans, and they shared information about MRS, or magnetic resonance spectroscopy.
High resolution proton magnetic resonance spectroscopy of biological fluids.
Clore and his colleagues used nuclear magnetic resonance spectroscopy to study the atoms where these two pairs joined.
It is common practice to introduce students to infrared (IR) and nuclear magnetic resonance spectroscopy (NMR) in the second year.
Wang's team used solution nuclear magnetic resonance spectroscopy to study the three-dimensional structure and dynamics of the transmembrane portion of APP affected by the two genetic mutations, and they discovered that the mutations cause a critical change to the T48 amino acid.
A final section describes advanced techniques in detail, among them the care and cleaning of laboratory glassware, filtration, sublimation, gas chromatography, and carbon-13 nuclear magnetic resonance spectroscopy.
TABLE 33 NUCLEAR MAGNETIC RESONANCE SPECTROSCOPY REVENUE BY REGION,

Full browser ?