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Using magnetic resonance imaging,we studied 24 patients with ischemic infraction of the internal capsule.Magnetic resonance imaging detected wallerian degeneration of the pyramidal tract below the capsular lesion in 11 patients(45.8%);all 11 had clinical evidence of pyramidal tract damage. In six additional patients magnetic resonance imaging findings,present only on axial slices,were considered to indicate possible wallerian degeneration.When motor deficit was associated with posterior limb lesions,magnetic resonance imaging detected wallerian degeneration of the pyramidal tract in 78.6%(11)of 14 patients. |
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