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  ABSTRACT Oriented Tensor Reconstruction: Tracing Neural Pathways from Diffusion Tensor MRI

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by Leonid Zhukov, Alan H. Barr
http://www.gg.caltech.edu/~zhukov/papers/vis02.pdf
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Abstract:

Figure 1: Human brain pathways recovered from DT-MRI data using the oriented tensor reconstruction algorithm In this paper we develop a new technique for tracing anatomical fibers from 3D tensor fields. The technique extracts salient tensor features using a local regularization technique that allows the algorithm to cross noisy regions and bridge gaps in the data. We applied the method to human brain DT-MRI data and recovered identifiable anatomical structures that correspond to the white matter brain-fiber pathways. The images in this paper are derived from a dataset having 121x88x60 resolution. We were able to recover fibers with less than the voxel size resolution by applying the regularization technique, i.e., using a priori assumptions about fiber smoothness. The regularization procedure is done through a moving least squares filter directly incorporated in the tracing algorithm.

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