Spatial Transformation of DWI Data Using Non-Negative Sparse Representation

@article{Yap2012SpatialTO,
  title={Spatial Transformation of DWI Data Using Non-Negative Sparse Representation},
  author={Pew-Thian Yap and Dinggang Shen},
  journal={IEEE Transactions on Medical Imaging},
  year={2012},
  volume={31},
  pages={2035-2049}
}
This paper presents an algorithm to transform and reconstruct diffusion-weighted imaging (DWI) data for alignment of micro-structures in association with spatial transformations. The key idea is to decompose the diffusion-attenuated signal profile, a function defined on a unit sphere, into a series of weighted diffusion basis functions (DBFs), reorient these weighted DBFs independently based on a local affine transformation, and then recompose the reoriented weighted DBFs to obtain the final… CONTINUE READING
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