Recovering Detailed Intra-voxel White Matter Structure by using an Adaptive Diffusion Dictionary

In this work, we present an voxel-wise adaptive diffusion dictionary to estimate on in vivo brain the structure of the axonal fiber populations. Our proposal overcomes the following limitations of the diffusion dictionary-based methods: the limited angular resolution and the fixed shapes for the atom set. The improvements obtained in the intra-voxel structure estimations at fiber crossings, bifurcations, kissings, etc, benefit brain research, allowing to obtain better tractography estimations, hence, it results in an accurate computation of the brain connectivity patterns.

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