A 3D oscillating gradient-prepared gradient spin-echo imaging method, and a device. The imaging method comprises the following steps: first, using a global saturation module to destroy previous residual transverse magnetization; second, embedding a pair of trapezoidal cosine oscillating gradients into a 90° x-180° y-90° -x radiofrequency pulse by a diffusion encoding module, to separate diffusion encoding and signal acquisition; then, using a fat saturation module to suppress a fat signal; finally, acquiring a signal by means of gradient spin-echo readout, and correcting phase errors among multiple excitations by multiplexed sensitivity-encoding reconstruction. Compared with a 2D plane echo-based oscillating gradient diffusion sequence used on a 3T clinical system, an 3D oscillating gradient-prepared gradient spin-echo sequence effectively reduces the imaging time, improves the signal to noise ratio, and is beneficial to clinical transformation of time-dependent diffusion MRI technology.
3D OSCILLATING GRADIENT-PREPARED GRADIENT SPIN-ECHO IMAGING METHOD, AND DEVICE