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First published online April 25, 2019

Altered spontaneous brain activity in retinal vein occlusion as determined by regional homogeneity: a resting-state fMRI study

Abstract

Background

Retinal vein occlusion (RVO) is among the commonest retinal vascular conditions that can cause severe visual loss. However, the relationship between RVO and altered spontaneous brain activity is still unknown.

Purpose

To apply regional homogeneity (ReHo) for the evaluation of abnormal brain activity in patients with RVO and explore the relationship between anomalous cerebral activity and behavioral manifestations.

Material and Methods

Resting-state functional magnetic resonance imaging (rs-fMRI) was performed in 26 patients with RVO (12 men, 14 women) and 24 healthy controls (12 men, 12 women) matched by age, sex, and education. ReHo was used to evaluate the local characteristics of spontaneous brain activity. The receiver operating characteristic (ROC) curve was applied to classify RVO and healthy control characteristics. Pearson correlation analysis was used to assess the relationship between the ReHo value of specific brain regions and clinical manifestations in RVO patients.

Results

ReHo values of the right posterior lobe of the cerebellum, fusiform gyrus, and right inferior temporal gyrus of patients with RVO were remarkably higher than those of controls (P < 0.05). ReHo values of the right cuneus in patients with RVO were significantly lower than those of controls (P < 0.05). ROC curve analysis of each brain region revealed a perfect accuracy of the areas under the curve (AUC). There was a negative correlation between the ReHo values of some regions and clinical manifestations.

Conclusion

RVO may cause dysfunction in many brain regions, which may help reveal the neural mechanisms underlying RVO.

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Published In

Article first published online: April 25, 2019
Issue published: December 2019

Keywords

  1. Retinal vein occlusion
  2. regional homogeneity
  3. resting-state functional magnetic resonance imaging
  4. rs-fMRI

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© The Foundation Acta Radiologica 2019.
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PubMed: 31023069

Authors

Affiliations

Si-Min Wen*
Department of Ophthalmology, The First Affiliated Hospital of Nanchang University, Jiangxi Province Clinical Ophthalmology Institute, Nanchang, Jiangxi, PR China
You-Lan Min*
Department of Ophthalmology, The First Affiliated Hospital of Nanchang University, Jiangxi Province Clinical Ophthalmology Institute, Nanchang, Jiangxi, PR China
Qing Yuan
Department of Ophthalmology, The First Affiliated Hospital of Nanchang University, Jiangxi Province Clinical Ophthalmology Institute, Nanchang, Jiangxi, PR China
Biao Li
Department of Ophthalmology, The First Affiliated Hospital of Nanchang University, Jiangxi Province Clinical Ophthalmology Institute, Nanchang, Jiangxi, PR China
Qi Lin
Department of Ophthalmology, The First Affiliated Hospital of Nanchang University, Jiangxi Province Clinical Ophthalmology Institute, Nanchang, Jiangxi, PR China
Pei-Wen Zhu
Department of Ophthalmology, The First Affiliated Hospital of Nanchang University, Jiangxi Province Clinical Ophthalmology Institute, Nanchang, Jiangxi, PR China
Wen-Qing Shi
Department of Ophthalmology, The First Affiliated Hospital of Nanchang University, Jiangxi Province Clinical Ophthalmology Institute, Nanchang, Jiangxi, PR China
Yong-Qiang Shu
Department of Radiology, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, PR China
Yi Shao*
Department of Ophthalmology, The First Affiliated Hospital of Nanchang University, Jiangxi Province Clinical Ophthalmology Institute, Nanchang, Jiangxi, PR China
Qiong Zhou*
Department of Ophthalmology, The First Affiliated Hospital of Nanchang University, Jiangxi Province Clinical Ophthalmology Institute, Nanchang, Jiangxi, PR China

Notes

*
Equal contributors.**Equal contributors.
Yi Shao, Department of Ophthalmology, The First Affiliated Hospital of Nanchang University, Jiangxi Province Clinical Ophthalmology Institute, 17 Yongwaizheng Street, Donghu, Nanchang, Jiangxi 330006, PR China. Email: [email protected]

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