Structural integrity of corticospinal motor fibers predicts motor impairment in chronic stroke

Motor impairment after stroke has been related to infarct size, infarct location, and integrity of motor tracts. To determine the value of diffusion tensor imaging (DTI) as a predictor of motor outcome and its role as a structural surrogate marker of impairment in chronic stroke, we tested correlations between motor impairment and DTI-derived measures of motor tract integrity.Thirty-five chronic stroke patients with varying degrees of recovery...