scholarly journals Motor outcome of deep intracerebral haemorrhage in diffusion tensor imaging: comparison of data from different locations along the corticospinal tract

2015 ◽  
Vol 37 (9) ◽  
pp. 774-781 ◽  
Author(s):  
Chun-Yu Cheng ◽  
Chia-Yu Hsu ◽  
Yen-Chu Huang ◽  
Yuan-Hsiung Tsai ◽  
Hsien-Ta Hsu ◽  
...  
Keyword(s):  
Diffusion Tensor Imaging ◽  
Intracerebral Haemorrhage ◽  
Corticospinal Tract ◽  
Diffusion Tensor ◽  
Motor Outcome

Chronic pontine strokes: Diffusion tensor imaging of corticospinal tract indicates the prognosis in terms of motor outcome

2021 ◽  
pp. 1-13
Author(s):  
Qian Xue ◽  
Xiao-Han Yang ◽  
Gao-Jun Teng ◽  
Shu-Dong Hu
Keyword(s):  
Diffusion Tensor Imaging ◽  
Corticospinal Tract ◽  
Diffusion Tensor ◽  
Internal Capsule ◽  
Outcome Evaluation ◽  
Cerebral Peduncle ◽  
Precentral Gyrus ◽  
Posterior Limb ◽  
Motor Outcome ◽  
Motor Outcomes

OBJECTIVE: To investigate relationship between the diffusion indexes of corticospinal tract (CST) and the neurological motor outcomes in chronic pontine stroke patients. METHODS: Diffusion tensor imaging (DTI) is performed in 27 patients with chronic pontine stroke. Fractional anisotropy (FA) values along the CST area, the track number, and the CST length are measured. Neurological and motor outcomes are evaluated based on Fugl-meyer (FM), National Institutes of Health Stroke Scale (NIHSS), Barthel index (BI), and modified Rankin scale (mRS) scores. The relationships between FA ratios (rFAs) in the CST of stroke subjects and their clinical motor scores are analyzed through Spearman’s correlation analysis. Then, diffusion tensor tractography (DTT) is performed to show the injury degree of CST. RESULTS: First, FA values are decreased in the infarct area, cerebral peduncle, posterior limb of the internal capsule, and precentral gyrus compared with those in the contralateral side. The number of CST is decreased in the ipsilateral side of the infarct. Second, rFAs in the cerebral peduncle, posterior limb of the internal capsule, and CST rnum correlate positively with FM scores (r = 0.824, 0.672, 0.651, p <  0.001) and negatively with mRS scores (r = –0.835, –0.604, –0.645, p≤0.001). Third, the injury degree of CST correlates negatively with FM scores (r = –0.627, p <  0.001). CONCLUSIONS: The study demonstrates that rFAs in the cerebral peduncle, posterior limb of the internal capsule, and CST rnum associate with motor outcome, suggesting that DTI may be applicable for outcome evaluation.

Changes in the corticospinal tract after wearing prosthesis in bilateral transtibial amputation

2017 ◽  
Vol 41 (5) ◽  
pp. 507-511
Author(s):  
Sang Yoon Lee ◽  
Si Hyun Kang ◽  
Don-Kyu Kim ◽  
Kyung Mook Seo ◽  
Hee Joon Ro ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Diffusion Tensor Imaging ◽  
Magnetic Resonance ◽  
Primary Motor Cortex ◽  
Corticospinal Tract ◽  
Diffusion Tensor ◽  
Brain Magnetic Resonance Imaging ◽  
Resonance Imaging ◽  
Transtibial Amputation

Background:After amputation, the brain is known to be reorganized especially in the primary motor cortex. We report a case to show changes in the corticospinal tract in a patient with serial bilateral transtibial amputations using diffusion tensor imaging.Case Description and Methods:A 78-year-old man had a transtibial amputation on his left side in 2008 and he underwent a right transtibial amputation in 2011. An initial brain magnetic resonance imaging with a diffusion tensor imaging was performed before starting rehabilitation on his right transtibial prosthesis, and a follow-up magnetic resonance imaging with diffusion tensor imaging was performed 2 years after this.Findings and Outcomes:In the initial diffusion tensor imaging, the number of fiber lines in his right corticospinal tract was larger than that in his left corticospinal tract. At follow-up diffusion tensor imaging, there was no definite difference in the number of fiber lines between both corticospinal tracts.Conclusion:We found that side-to-side corticospinal tract differences were equalized after using bilateral prostheses.Clinical relevanceThis case report suggests that diffusion tensor imaging tractography could be a useful method to understand corticomotor reorganization after using prosthesis in transtibial amputation.

scholarly journals White matter plasticity in the corticospinal tract of musicians: A diffusion tensor imaging study

NeuroImage ◽  
2009 ◽  
Vol 46 (3) ◽  
pp. 600-607 ◽  
Author(s):  
Adrian Imfeld ◽  
Mathias S. Oechslin ◽  
Martin Meyer ◽  
Thomas Loenneker ◽  
Lutz Jancke
Keyword(s):  
Diffusion Tensor Imaging ◽  
White Matter ◽  
Corticospinal Tract ◽  
Diffusion Tensor ◽  
Imaging Study ◽  
Diffusion Tensor Imaging Study

Corticospinal tract involvement in spinocerebellar ataxia type 3: a diffusion tensor imaging study

2020 ◽  
Author(s):  
Bruno Shigueo Yonekura Inada ◽  
Thiago Junqueira Ribeiro Rezende ◽  
Fernando Vieira Pereira ◽  
Lucas Ávila Lessa Garcia ◽  
Antônio José da Rocha ◽  
...  
Keyword(s):  
Diffusion Tensor Imaging ◽  
Spinocerebellar Ataxia ◽  
Corticospinal Tract ◽  
Diffusion Tensor ◽  
Imaging Study ◽  
Spinocerebellar Ataxia Type ◽  
Spinocerebellar Ataxia Type 3 ◽  
Tract Involvement ◽  
Type 3 ◽  
Diffusion Tensor Imaging Study

scholarly journals Diffusion Tensor Imaging Evaluation of Corticospinal Tract Hyperintensity in Upper Motor Neuron-Predominant ALS Patients

2011 ◽  
Vol 2011 ◽  
pp. 1-9 ◽  
Author(s):  
Venkateswaran Rajagopalan ◽  
Didier Allexandre ◽  
Guang H. Yue ◽  
Erik P. Pioro
Keyword(s):  
Diffusion Tensor Imaging ◽  
Motor Neuron ◽  
Corticospinal Tract ◽  
Diffusion Tensor ◽  
Mean Diffusivity ◽  
Internal Capsule ◽  
Proton Density ◽  
Imaging Evaluation ◽  
Axonal Pathology ◽  
Als Patients

Amyotrophic lateral sclerosis (ALS) patients with predominant upper motor neuron (UMN) signs occasionally have hyperintensity of corticospinal tract (CST) on T2- and proton-density-(PD-) weighted brain images. Diffusion tensor imaging (DTI) was used to assess whether diffusion parameters along intracranial CST differ in presence or absence of hyperintensity and correspond to UMN dysfunction. DTI brain scans were acquired in 47 UMN-predominant ALS patients with (n=21) or without (n=26) CST hyperintensity and in 10 control subjects. Fractional anisotropy (FA), mean diffusivity (MD), axial diffusivity (AD), and radial diffusivity (RD) were measured in four regions of interests (ROIs) along CST. Abnormalities (P<0.05) were observed in FA, AD, or RD in CST primarily at internal capsule (IC) level in ALS patients, especially those with CST hyperintensity. Clinical measures corresponded well with DTI changes at IC level. The IC abnormalities suggest a prominent axonopathy in UMN-predominant ALS and that tissue changes underlying CST hyperintensity have specific DTI changes, suggestive of unique axonal pathology.

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