Seven subjects with spasticity that developed 2-22 years after cerebrovascular accidents (CVA) were studied with 3T MRI of the brain including diffusion tractography (DTI) and fractional anisotropy (FA) measurements of the white matter of the corticospinal tracts (CST), corpus callosum (CC) and cerebral lobes of the affected and contralateral sides prior and after the injection of botulin toxin at the contours of peripheral nerves of the affected side.
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Angel et al. (2018) studied this question.
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