Hand Function and Diffusion Tensor Imaging according to Response of Evoked Potentials in Post-stroke Hemiplegic Patients.

, Park, Gi Young; , Cho, Jang Hyuk; , Lee, So Young; , Bae, Jung Ho; , Sohn, Chul Ho; , Sohn, Sung Il

Original Article

Journal of the Korean Academy of Rehabilitation Medicine 2008;32(2):182-188.

Park, Gi Young , Cho, Jang Hyuk , Lee, So Young , Bae, Jung Ho , Sohn, Chul Ho , Sohn, Sung Il

¹Department of Rehabilitation Medicine, The Catholic University of Daegu College of Medicine, Daegu, Korea.
²Department of Rehabilitation Medicine, Daegu Veterans Hospital, Daegu, Korea. re@dsmc.or.kr
³Department of Rehabilitation Medicine, Keimyung University School of Medicine, Daegu, Korea.
⁴Department of Radiology, Keimyung University School of Medicine, Daegu, Korea.
⁵Department of Neurology, Keimyung University School of Medicine, Daegu, Korea.

뇌졸중 후 편마비 환자에서 유발전위 반응에 따른 확산 텐서 영상과 손 기능

박기영¹, 조장혁², 이소영³, 배정호³, 손철호⁴, 손성일⁵

¹대구가톨릭대학교 의과대학 재활의학교실, ²대구보훈병원 재활의학과, 계명대학교 의과대학 ³재활의학교실, ⁴영상의학교실, ⁵신경과학교실

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. (J Korean Acad Rehab Med 2008; 32: 182-188)

Key Words: Hand movement scale, Diffusion tensor imaging, Motor evoked potential