MR imaging with enhanced sensitivity of specific spin motion

摘要

The alternating magnetic field gradient used to sensitize an NMR signal to spin motion is modulated in amplitude with a window function to tailor it to the particular NMR measurement. In an MR elastography measurement, the gradient is a sinusoidal waveform having a frequency the same as an applied oscillatory stress, and the window function desensitizes the measurement to spin motions at other frequencies.