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Clinical Article
Distribution characteristics and clinical value of U-fiber involvements in multiple sclerosis
LUO Dan  CHEN Xiaoya  ZHU Qiyuan  ZHANG Zhiwei  YU Bin  ZHENG Qiao  FENG Jinzhou  LI Yongmei 

Cite this article as: Luo D, Chen XY, Zhu QY, et al. Distribution characteristics and clinical value of U-fiber involvements in multiple sclerosis[J]. Chin J Magn Reson Imaging, 2022, 13(6): 1-4, 16. DOI:10.12015/issn.1674-8034.2022.06.001.

[Abstract] Objective To study the frequency and distribution characteristics of U-fiber involvements in relapsing-remitting multiple sclerosis (RRMS), and to investigate whether these findings are correlated with physical disability and neuropsychological impairments.Materials and Methods This retrospective study included 49 cases of clinically diagnosed RRMS patients. Three-dimensional T2 fluid attenuation inversion recovery (3D T2-FLAIR) and T1-weighted magnetization-prepared rapid acquisition of gradient echo (T1 MPRAGE) sequences were obtained, as well as the clinical Extended Disability Status Scale (EDSS) and neuropsychological tests. Based on the ITK-SNAP software, the U-fiber lesions were manually delineated on the 3D T2-FLAIR image, and the prevalence of lesions was calculated in addition to the spatial distribution so as to make the U-fiber lesion probability map. The SPSS 26.0 software was used to evaluate the correlation between the number or volume of U-fiber lesions and clinical data, including EDSS and neuropsychological tests scores.Results A total of 434 hyperintensities along the U-fiber were detected in 47 (95.9%) RRMS patients on 3D T2-FLAIR image. Two-hundred and nine lesions (48.2%) were seen in the frontal lobe, 85 (19.6%) in the parietal lobe, 55 (12.7%) in the temporal lobe, 61 (14.1%) in the occipital lobe, and 24 (5.5%) in the insula lobe. The number and volume of U- fiber lesions were positively correlated with the Hamilton Depression-17 (HAMD-17) Scale and Fatigue Severity Scale (FSS) scores , and negatively correlated with the Symbolic Digital Modal Test (SDMT) scores (all P<0.05), and demonstrated no significant correlation with EDSS scores (P>0.05).Conclusions U-fiber involvement is common in RRMS patients and occurs frequently in the frontal lobe. U-fiber lesions are related to depression, fatigue and cognitive impairment in RRMS.
[Keywords] multiple sclerosis;U-fiber lesions;cognitive impairment;lesion probability map;three-dimensional fluid attenuation inversion recovery;magnetic resonance imaging

LUO Dan   CHEN Xiaoya   ZHU Qiyuan   ZHANG Zhiwei   YU Bin   ZHENG Qiao   FENG Jinzhou   LI Yongmei*  

Department of Radiology, the First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China

Li YM, E-mail:

Conflicts of interest   None.

ACKNOWLEDGMENTS Chongqing Basic Research and Frontier Exploration Special Project (Chongqing Natural Science Foundation Project) (No. cstc2018jcyjAX0584).
Received  2021-11-19
Accepted  2022-05-23
DOI: 10.12015/issn.1674-8034.2022.06.001
Cite this article as: Luo D, Chen XY, Zhu QY, et al. Distribution characteristics and clinical value of U-fiber involvements in multiple sclerosis[J]. Chin J Magn Reson Imaging, 2022, 13(6): 1-4, 16. DOI:10.12015/issn.1674-8034.2022.06.001.

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