نتایج جستجو برای: multiple sclerosis fmri alff

تعداد نتایج: 819476  

Karim Khoshgard, Meysam Siyah Mansoory Razie Chehreh

Introduction: Multiple Sclerosis (MS) is the most common non-traumatic neurological diseases of young adults. MS often reported during ages 20-62. MS affects the various anatomical parts of the central nervous system. Up to 65% of multiple sclerosis patients MS patients suffer from various problems, such as fatigue, depression, pain and sleep disorders. Unlike MRI, that only sh...

2013
Yonghua Cui Zhen Jin Xu Chen Yong He Xia Liang Yi Zheng

Tourette syndrome (TS) is a childhood-onset chronic disorder characterized by the presence of multiple motor and vocal tics. This study investigated spontaneous low-frequency fluctuations in TS patients during resting-state functional magnetic resonance imaging (rs-fMRI) scans. We obtained rs-fMRI scans from 17 drug-naïve TS children and 15 demographically matched healthy children. We computed ...

2014
Chen Liu Chuanming Li1 Xuntao Yin Jun Yang Daiquan Zhou Li Gui Jian Wang

OBJECTIVES To investigate the amplitude of low-frequency fluctuations (ALFF) alteration of whole brain in patients with subcortical ischemic vascular dementia (SIVD). MATERIALS AND METHODS Thirty patients with SIVD and 35 control subjects were included in this study. All of them underwent structural MRI and rs-fMRI scan. The structural data were processed using the voxel-based morphometry 8 t...

2014
Chun-Xia Wang Kai-Liang Fu Huai-Jun Liu Fei Xing Song-Yun Zhang Pedro Antonio Valdes-Sosa

PURPOSE To investigate correlations between altered spontaneous brain activity, diabetic vascular disease, and cognitive function for patients with type 2 diabetes mellitus (T2DM) using resting-state functional magnetic resonance imaging (rs-fMRI). METHODS Rs-fMRI was performed for T2DM patients (n = 26) and age-, gender-, and education-matched non-diabetic control subjects (n = 26). Amplitud...

2012
ChunYan Luo Qin Chen Rui Huang XuePing Chen Ke Chen XiaoQi Huang HeHan Tang QiYong Gong Hui-Fang Shang

By detecting spontaneous low-frequency fluctuations (LFF) of blood oxygen level-dependent (BOLD) signals, resting-state functional magnetic resonance imaging (rfMRI) measurements are believed to reflect spontaneous cerebral neural activity. Previous fMRI studies were focused on the examination of motor-related areas and little is known about the functional changes in the extra-motor areas in am...

2011
Xiao-Wei Song Zhang-Ye Dong Xiang-Yu Long Su-Fang Li Xi-Nian Zuo Chao-Zhe Zhu Yong He Chao-Gan Yan Yu-Feng Zang

Resting-state fMRI (RS-fMRI) has been drawing more and more attention in recent years. However, a publicly available, systematically integrated and easy-to-use tool for RS-fMRI data processing is still lacking. We developed a toolkit for the analysis of RS-fMRI data, namely the RESting-state fMRI data analysis Toolkit (REST). REST was developed in MATLAB with graphical user interface (GUI). Aft...

2016
Han Lv Pengfei Zhao Zhaohui Liu Guopeng Wang Rong Zeng Fei Yan Cheng Dong Ling Zhang Rui Li Peng Wang Ting Li Shusheng Gong Zhenchang Wang

Previous resting-state functional magnetic resonance imaging (rs-fMRI) studies have shown that neurological changes are important findings in vascular pulsatile tinnitus (PT) patients. Here, we utilized rs-fMRI to measure the amplitude of low-frequency fluctuations (ALFF) in forty patients with unilateral PT and forty age-, gender-, and education-matched normal control subjects. Two different f...

2012
Rongfeng Qi Long Jiang Zhang Jianhui Zhong Shengyong Wu Zhiqiang Zhang Yuan Zhong Ling Ni Gang Zheng Qing Jiao Xingjiang Wu Xinxin Fan Yijun Liu Guangming Lu

PURPOSE The majority of cirrhotic patients who underwent transjugular intrahepatic portosystemic shunt (TIPS) experienced the first post-TIPS hepatic encephalopathy (HE) episode within the first three months after TIPS insertion. However, so far, little is known about the exact neuro-pathophysiological mechanism of TIPS's effects on brain function. We aimed to investigate the dynamics of brain ...

2014
Dali Lu Qing Jiao Yuan Zhong Weijia Gao Qian Xiao Xiaoqun Liu Xiaoling Lin Wentao Cheng Lanzhu Luo Chuanjian Xu Guangming Lu Linyan Su

BACKGROUND Previous functional magnetic resonance imaging (fMRI) studies have shown abnormal functional connectivity in regions involved in emotion processing and regulation in pediatric bipolar disorder (PBD). Recent studies indicate, however, that task-dependent neural changes only represent a small fraction of the brain's total activity. How the brain allocates the majority of its resources ...

2017
Zhijuan Chen Yang An Bofeng Zhao Weidong Yang Qing Yu Li Cai Hongyan Ni Jianzhong Yin

OBJECTIVE To determine the value of resting-state functional magnetic resonance imaging (RS-fMRI) based on the local analysis methods regional homogeneity (ReHo), amplitude of low-frequency fluctuations (ALFF), and fractional ALFF (fALFF), for detecting epileptogenic zones (EZs). METHODS A total of 42 consecutive patients with focal epilepsy were enrolled. Sensitivity, specificity, positive p...

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