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The manually-traced regions of interest (ROIs): caudate nucleus (Cd), putamen (Pt), globus pallidus (Gp), thalamus (Th), pulvinar nuclei (Pul), the brain stem nuclei; red nucleus (Rn), substantia nigra (Sn), and dentate nucleus (Dn), in the cerebellum. Susceptibility is presented in ppb = parts per billion.
