| 摘要 |
Methods and systems for visualizing white-matter tracts in the central nervous system, including the brain and spine. At least two sets of diffusion-weighted magnetic resonance (MR) images are acquired using a fast imaging pulse sequence, such as echo planar imaging, fast spin echo, or a combination of the two. The diffusion tensor anisotropy elements at each voxel in the image are calculated using a least-squares algorithm. A three-dimensional diffusion anisotropy image is obtained either directly from the three-dimensional diffusion-weighted MR images, or by reformatting the two-dimensional multi-slice MR images acquired in an interleaved fashion. A tractogram that highlights the white-matter tracts is produced at a preferred angle within a selected slab using a maximum intensity projection algorithm.
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