Influence of Scan Duration on the Reliability of Resting-State fMRI Regional Homogeneity
Regional homogeneity (ReHo) is widely used in the analysis of fMRI data of patients with schizophrenia.However,the influence of scan duration on the results is not clear.In this work,intraclass correlation coefficient (ICC) was applied to investigate the reliability of a popular method called KCC-ReHo algorithm,using rest-state fMRI data of schizophrenia patients.The full length 6 minutes data collected was split into data with six different durations from 1 min to 6 min with 1 min equal separation.With increasing scan duration,the mean ICC value of the whole brain is found to increase monotonically from 0.55 to 0.97,and the standard deviation decreases from 0.21 to 0.02.The high ICC values mainly occurred in the superior parietal gyrus,paracentral lobule,superior frontal gyrus dorsolateral,supplementary motor area,fusiform gyrus and inferior temporal gyrus of both hemispheres.
Resting state Regional homogeneity ICC Scan duration Schizophrenia
Xiaotang Li Jiansong Zhou Xiaoyan Liu
College of Electrical and Information Engineering,Hunan University,Changsha 410082,China Mental Health Institute of The Second Xiangya Hospital,Central South University,Changsha 410011,Chin
国际会议
Chinese Conference on Pattern Recognition, CCPR(2014年全国模式识别学术会议)
长沙
英文
402-408
2014-11-01（万方平台首次上网日期，不代表论文的发表时间）