Accordingly, the diffusion spectrum can be used to infer the distribution of multiple fiber orientations within each voxel, DSI offers a generalization of DTI method.

• 此种成像乃结合两种不同的水分子扩散量测技术：一维扩散频谱及扩散张量磁振成像，来取得水分子在每一个影像位元内进行扩散的三维机率分布。