(omega or nu) - the frequency at which magnetic resonance can be excited; given by the Larmor equation. By varying the magnetic field across the body with a gradient magnetic field, the corresponding variation of the Larmor frequency can be used to encode position. For protons (hydrogen nuclei), the Larmor frequency is 42.58 MHz/Tesla.

The precession frequency of a nuclear spin in a magnetic field. It depends linearly on the spin's magnetic moment and the strength of the field.

The frequency at which a magnetic nucleus comes into resonance in a magnetic field of given strength.

(MRI) The frequency or rate of precession of the nuclear magnetic moment (spins) and is proportional to the magnetic field strength. Radio waves of the Larmor frequency are used to produce RF pulses.

the frequency at which magnetic resonance in a nucleus can be excited and detected. The frequency varies directly with magnetic field strength, and is normally in the radio frequency (RF) range.

The Larmor frequency is the frequency or rate of precession of the nuclear magnetic moment (spins) and is proportional to the magnetic field strength as shown in the Larmor equation: f= -gBo/2pi where f is the Larmor frequency in Hertz, g is the gyromagnetic ratio of the nucleus, and Bo is the magnetic field strength. P-T Phantom A phantom is an object of known size and composition (such as a bottle of saline) that is used to test the functioning of an MRI machine.

The resonance frequency of a spin in a magnetic field. The rate of precession of a spin packet in a magnetic field. The frequency which will cause a transition between the two spin energy levels of a nucleus. [ Chapter 3