magnetic resonance


Also found in: Dictionary, Thesaurus, Legal, Financial, Acronyms, Encyclopedia, Wikipedia.
Related to magnetic resonance: nuclear magnetic resonance

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

Q. who much cost the resonance magnetic machine? new or used

A. here is a company that you can even get a MRI scanner in a leasing program:
http://www.nationwideimaging.com/index.php

More discussions about magnetic resonance
References in periodicals archive ?
Screening for vestibular schwannoma by magnetic resonance imaging: analysis of 1821 patients.
At that time, magnetic resonance instruments had been working so well for so long that scientists were convinced the theory behind them was rock solid.
As a stand alone volume, Advances in NMR, comprehensively highlights the rapid progress of nuclear magnetic resonance over the last five years.
Warren, and their colleagues at Princeton University stumbled upon the unpredictable behavior during experiments with a nuclear magnetic resonance (NMR) spectrometer, an instrument commonly used for determining the configurations of molecules.
Vasovist, EPIX's lead product candidate, is an injectable intravascular contrast agent designed to provide visual imaging of the vascular system through magnetic resonance angiography.
0 (gadobutrol) for the diagnosis of diseases in the whole body with magnetic resonance imaging.
Though increasingly common in mainstream medicine, magnetic resonance imaging (MRI) has its limitations.
Food and Drug Administration (FDA) to research and define methods for measuring Magnetic Resonance Imaging (MRI) safety of medical implants.
Now, using magnetic resonance imaging (MRI), researchers have for the first time obtained three-dimensional pictures of a liquid foam.
Nasdaq:EPIX), a developer of innovative pharmaceuticals for magnetic resonance imaging (MRI), today announced that it will release first quarter 2006 financial results on Monday, May 1, 2006, before the open of regular market trading hours.
As an important step toward developing a technique for obtaining images showing the three-dimensional atomic arrangement of individual molecules in their natural settings, researchers have now demonstrated that microscopic devices designed to sense minute magnetic forces can be used to detect nuclear magnetic resonance.
Our customers will benefit from the fact that our team is on-site at this new facility to fulfill their helium transfill and magnet service requirements in a timely manner," according to Marybeth Marx, general manager of Praxair's Cryomag Services business which supplies helium, transfill and magnet services to the magnetic resonance imaging (MRI) and nuclear magnetic resonance (NMR) industries.

Full browser ?