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.
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The magnetic resonance signal has an amplitude that depends on water content and a lifetime that depends on the water environment, namely, cell wall or cell lumen.
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
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 technology operates under the principle that a magnetic resonance signal can be detected from explosives without applying a large external magnetic field.
The purpose of selection techniques is to precisely measure assigned voxels by reading the magnetic resonance signal in the selected voxel only.
In the case of wood logs, measurements of magnetic resonance signal in the sapwood are therefore possible without first removing the bark.
Even the founders of magnetic resonance theory had pondered whether interactions among spins on different molecules could contribute to the magnetic resonance signal. But they concluded that the magnetic forces between widely separated spins could be ignored.
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.

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