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J Korean Acad Rehabil Med. 2008 Apr;32(2):182-188. Korean. Original Article.
Park GY , Cho JH , Lee SY , Bae JH , Sohn CH , Sohn SI .
Department of Rehabilitation Medicine, The Catholic University of Daegu College of Medicine, Daegu, Korea.
Department of Rehabilitation Medicine, Daegu Veterans Hospital, Daegu, Korea. re@dsmc.or.kr
Department of Rehabilitation Medicine, Keimyung University School of Medicine, Daegu, Korea.
Department of Radiology, Keimyung University School of Medicine, Daegu, Korea.
Department of Neurology, Keimyung University School of Medicine, Daegu, Korea.
Abstract

OBJECTIVE: To investigate the association between evoked potentials and fractional anisotropy (FA) ratio in posterior limb of the internal capsule and hand movement scale (HMS) in post-stroke hemiplegic patients. METHOD: Thirty-six post-stroke hemiplegic patients with a lesion in the internal capsule were included in this study. Diffusion tensor imaging (DTI) was performed with a 3.0 tesla MR at about 1 month after stroke. FA ratio was measured in posterior limb of the internal capsule of the patients. Motor evoked potential (MEP) was obtained by magnetic stimulation of the motor cortex and recorded from the abductor pollicis muscle. Somatosensory evoked potential (SSEP) was obtained by electrical stimulation of the median nerve at the wrist and recorded from the somatosensory cortex. Hand movement scale was obtained at about 1 month and 3 months after stroke. RESULTS: Hand movement scale at about 1 month and 3 months after stroke and FA ratio were reduced significantly in patients who showed no response on MEP. However, no significant differences were observed between the patients who showed SSEP response and those who did not. FA ratio and hand movement scale were highly correlated to each other. CONCLUSION: MEP and FA ratio can be helpful in assessing the hand function at about 1 month and 3 months in post-stroke hemiplegic patients.

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