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RESEARCH ARTICLE
Year : 2017  |  Volume : 12  |  Issue : 12  |  Page : 2021-2024

Central post-stroke pain due to injury of the spinothalamic tract in patients with cerebral infarction: a diffusion tensor tractography imaging study


1 Department of Physical Medicine and Rehabilitation, College of Medicine, Yeungnam University, Namku, Daegu, Republic of Korea
2 Department of Neurology, College of Medicine, Yeungnam University, Namku, Daegu, Republic of Korea
3 Department of Physical Therapy, College of Health Sciences, Dankook University, Chungnam, Republic of Korea

Correspondence Address:
Sang Seok Yeo
Department of Physical Therapy, College of Health Sciences, Dankook University, Chungnam
Republic of Korea
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Source of Support: This work was supported by the National Research Foundation (NRF) of Korea Grant funded by the Korean Government (MSIP), No. NRF-2015R1D1A1A01060314., Conflict of Interest: None


DOI: 10.4103/1673-5374.221159

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Many studies using diffusion tensor tractography (DTT) have demonstrated that injury of the spinothalamic tract (STT) is the pathogenetic mechanism of central post-stroke pain (CPSP) in intracerebral hemorrhage; however, there is no DTT study reporting the pathogenetic mechanism of CPSP in cerebral infarction. In this study, we investigated injury of the STT in patients with CPSP following cerebral infarction, using DTT. Five patients with CPSP following cerebral infarction and eight age- and sex-matched healthy control subjects were recruited for this study. STT was examined using DTT. Among DTT parameters of the affected STT, fractional anisotropy and tract volume were decreased by more than two standard deviations in two patients (patients 1 and 2) and three patients (patients 3, 4, and 5), respectively, compared with those of the control subjects, while mean diffusivity value was increased by more than two standard deviations in one patient (patient 2). Regarding DTT configuration, all affected STTs passed through adjacent part of the infarct and three STTs showed narrowing. These findings suggest that injury of the STT might be a pathogenetic etiology of CPSP in patients with cerebral infarction.


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