precession

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Related to Free precession: precessional, Torque-free precession

precession

[-sesh′ən]
Etymology: L, praecedere, to go before
a comparatively slow gyration of the axis of a spinning body such that the axis traces out a cone, caused by the application of a torque. The magnetic moment of a nucleus with spin experiences such a torque when inclined at an angle to an applied magnetic field, resulting in precession at the Larmor frequency.

precession

An MRI term for the relatively slow gyration of the axis of a spinning body, which traces out a conical configuration. Precision is caused by the application of a torque which tends to change the direction of the rotation axis and is continuously directed at right angles to the plane of the torque. The magnetic moment of a nucleus with spin will experience such a torque when inclined at an angle to the magnetic field, resulting in precession at the Larmor frequency.

pre·ces·sion

(prē-sesh'ŭn)
The secondary spin of magnetic movements around the main magnetic field.
References in periodicals archive ?
2] is simply shortened, in the higher energy case the shape of the FID can be dramatically modified because the transverse magnetization can increase during the free precession.
Iron overload * Low signal on SSFP imaging * Quantification with T2 * 1 LGE = late gadolinium enhancement, SSFP = steady state free precession, LV = left ventricle
We also are able to accommodate both orthopedic and internal medicine referrals because the Ultra is able to perform advanced applications, such as Steady State Free Precession (SSFP), as well as vascular and MR Cholangiopancreatography (MRCP) abdominal imaging.
Interest of the steady state free precession (SSFP) sequence for 3D modeling of the whole fetus.