magnetic resonance

(redirected from electron paramagnetic resonance)
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magnetic resonance (MR)

a phenomenon in which the atomic nuclei of certain materials placed in a strong, static magnetic field absorb radio waves supplied by a transmitter at particular frequencies. The energy of the radio waves promotes the nuclei from a low-energy state, in which the nuclear spin is aligned parallel to the magnetic field, to a higher-energy state, in which the nuclear spin has a component transverse or opposed to the field. These nuclei occasionally revert to the lower-energy state by emitting photons at characteristic (resonance) frequencies, providing information about the local magnetic field at the nuclei. The rate at which the nuclei revert, or relax, to the lower-energy state when the source of radio waves is turned off is another important factor. See also relaxation time.

magnetic resonance

The absorption or emission of electromagnetic energy by nuclei in a static magnetic field after excitation by a suitable resonance frequency magnetic field; the peak resonance frequency is proportional to the magnetic field, and given by the Larmor equation.

magnetic resonance

The absorption or emission of electromagnetic energy by nuclei in a static magnetic field after excitation by a suitable resonance frequency magnetic field; the peak resonance frequency is proportional to the magnetic fiel, and given by the Larmor equation. See Magnetic responance imaging.

Patient discussion about magnetic resonance

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http://www.nationwideimaging.com/index.php

More discussions about magnetic resonance
References in periodicals archive ?
these are: apparatus for electron paramagnetic resonance including an incubation chamber.
Part 5 Public Procurement: EPR - Apparatus for electron paramagnetic resonance including an incubation chamber.
The first part presents basic fundamentals and advantages of electron paramagnetic resonance spectrscopy.
EAS also supplies LTS wire for research animal MRI magnets, for Electron Paramagnetic Resonance (EPR) magnets and for Fourier Transform Mass Spectrometry (FTMS) magnets.
Contract award: The proceedings and the order is to select contractors for the purchase, delivery, installation and commissioning of equipment for teaching purposes in the form of electron paramagnetic resonance spectrometer (EPR) operating in the microwave band X desktop type (bench-top) with equipment, ie.
Providing a team of electron paramagnetic resonance spectrometry for measurements in X-band and Q-band, for the Consortium for the construction, equipment and operation of the National Research Center on Human Evolution located at Paseo de la Sierra de Atapuerca in Burgos.
The new film will be sold under the trademark of Biomax and will be available solely through Bruker BioSpin, the world leader in Electron Paramagnetic Resonance (EPR) analyzers.
Contract award: acquisition of an electron paramagnetic resonance spectrometer (x-band and q band) under the project ocarmel.
Spin trapping is a method by which researchers can measure free radicals via electron paramagnetic resonance spectroscopy (EPR).
Contract notice: Acquisition of an electron paramagnetic resonance spectrometer (x-band and q band) under the project ocarmel.