3 3 DIFFUSION-WEIGHTED MAGNETIC RESONANCE IMAGING USING 3D MOSAIC SEGMENTATION AND 3D NAVIGATOR PHASE CORRECTION

摘要

In the magnetic resonance apparatus and its method of operation, 3D navigator data is acquired and used to correct spatially varying phase errors in the imaging data acquired simultaneously in each shot of the multi-shot data acquisition sequence. And the diffusion-weighted magnetic resonance data and the navigator data are input into the k-space, respectively, in the blocks each forming a subset of k-space using a mosaic sampling scheme. The navigator data in each shot is input into a block located in the center of the k-space, and in each shot, the corresponding image data is offset in at least one spatial direction from the navigator data block, Block. The offset is changed for each shot.