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Commonly used seeds, inclusion and exclusions masks for corticospinal tract (CST) DTI-based tractography: (A) probabilistic of corticospinal tract (CST) showing commonly chosen masks/ROIs. (B) deterministic, showing streamlines. The pons was an inclusion mask in this example. Extraction of metrics can also be performed from this ROI in the pons, in the internal capsule, the entire CST or other parts of the tract.
