magnetic resonance signal

magnetic resonance signal

An electromagnetic signal in the radiofrequency range produced by the precession of the transverse magnetisation of spins. Rotation of the magnetisation induces a voltage that is amplified and demodulated by the receiver; the signal may refer only to this induced voltage.
References in periodicals archive ?
Among the topics are magnetic resonance imaging (MRI) scanners, basic principles of magnetic resonance signal generation and image formation, MRI contrast mechanisms and acquisition techniques, the origins and properties of blood-oxygen-level-dependent (BOLD) functional MRI (fMRI), basic and advanced approaches to statistical analysis, advanced fMRI methods, and combining fMRI with other techniques.
In the magnetic resonance signal, this magnetic field will induce a phase shift, [phi], of
If there simultaneously exists a magnetic field gradient during the MRI, this movement of the axon causes the spins to diphase, resulting in an artifact in the magnetic resonance signal.
Effects of brain membranes on 1H nuclear magnetic resonance signal intensity of ethanol in vitro.
Magnetic resonance signal characteristics of lipomas are quite specific; lipomas have high signal intensity on T1 and T2 weighted images and their signal are suppressed by fat suppression sequence and by this way cardiac MRI become diagnostic in this case.
The purpose of selection techniques is to precisely measure assigned voxels by reading the magnetic resonance signal in the selected voxel only.
Even the founders of magnetic resonance theory had pondered whether interactions among spins on different molecules could contribute to the magnetic resonance signal.
Tenders are invited for Supply Of Gmr Device For Measurement Of Surface Nuclear Magnetic Resonance Signals For Aquifer Characterization And Geophysical Ground Water Investigations One Set
These researchers have developed a means for recovering useful magnetic resonance signals from materials within a nonuniform magnetic field.
The fifth core, the Electron Spin Resonance (ESR) Core, uses magnetic resonance signals to detect and measure the presence of free radicals in tissues.
The role of those interactions in magnetic resonance signals was not recognized until the Princeton team focused on them in the early 1990s (See main story).

Full browser ?