Fast spin-echo signal pulse-train generating method for diffusion-weighted imaging in medical MRI

摘要

Generates diffusion-weighted transverse spin magnetization. The method has the first step of applying transverse magnetization by an RF excitation pulse and a bipolar gradient pulse to obtain diffusion weighting. Then first gradient pulse shifts the phase of transverse magnetization. An RF pulse switches longitudinal-axis components to ensure transverse magnetization. Second bipolar gradient pulse is applied. The FSE pulse train is obtained by magnetization in the transverse plane and RF post-focussing. The picture is reconstructed from the echo signals.