Gradient: The amount and direction of the rate of change in space of some quantity, such as magnetic field strength. Also commonly used to refer to magnetic field gradient.

Gradienta pielāgošana fāžu pāreju nepieļaušanas nolūkā

Es ieteiktu: gradienta pietuvināšana nullei eholaikā


... artifacts in the image; these can be reduced by reduction of phase shifts with gradient moment nulling.
Gradient moment nulling. Adjustment to zero at the time TE of the net moments of the amplitude of the waveform of the magnetic field gradients with time (e.g., zero moment is the area under the curve, first moment is the “center of gravity,” etc). The aim is to minimize the phase shifts acquired by the transverse magnetization of excited nuclei moving along the gradients (including the effect of refocusing RF pulses), particularly for the reduction of image artifacts due to motion.