chemical shift(redirected from Shielding (NMR))
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dependence of the resonance frequency of a nucleus on the chemical binding of the atom or molecule in which it is contained. See: chemical shift artifact.
Farlex Partner Medical Dictionary © Farlex 2012
chemical shiftAn MRI term for a variation in the nominal Larmor frequency for a particular isotope within the imaging volume. The amount of chemical shift is directly proportional to the strength of the magnetic field, and is specified in parts per million of the resonant frequency.
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.