DPABI/animal processing
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严老师您好,
我想请问一下dpabi能否处理小鼠的数据?我看了您的视频教程,里面简单地介绍了大鼠和猴子的处理,请问dpabi有小鼠大脑的模板吗?如果处理小鼠的数据是否有什么需要注意的地方呢?感谢您的解答!
Hui
严老师您好,
我想请问一下dpabi能否处理小鼠的数据?我看了您的视频教程,里面简单地介绍了大鼠和猴子的处理,请问dpabi有小鼠大脑的模板吗?如果处理小鼠的数据是否有什么需要注意的地方呢?感谢您的解答!
Hui
Dear Prof Yan
I have some questions about statistical analysis.
In our study, all patients were assigned to three groups, with two different medication treatment and one medication-naive control. And all these patients accepted MRI scan at baseline and after 12 weeks. Now, my question is as followings:
1. Can we compare the group × time interaction effects on brain activity indicators by repeated measures ANOVA, such as ALFF,fALFF and ReHo. At first, I try to do this by mixed-effects comparison, but it can only treat two factors.
尊敬的专家:
您好,我通过dpabi中的Extract ROI courses 对AAL、哈佛牛津地图、CC200等4个地图集进行了ROI区域时间序列提取,我想知道的是dpabi在提取ROI时间序列的时候,是通过什么样的计算方式。是分别对每个ROI区域内进行标准化后输出吗?(减均值/标准差),还是通过其他方式?第二个问题,如图所示,ROI Signals_Sub_XX.mat 是每个ROI区域的时间序列吗? 在视频中我并没有看到这一点的讲解,我对ROI提取十分感兴趣,期待您的答复!
祝您工作愉快!
Hi,
When running DPARSF with the attached specifications, we are asked to manually reorient the image (see screenshot).
Is this something normal/correct, or can it be avoided?
尊敬的专家:
您好,我有一个很愚昧的问题需要请教。在做Group ICA分析正常人与病人的时候,我们应该将正常人和病人分别作为一组进行Group ICA,还是应该将正常人与病人都放在一起然后进行Group ICA?
Dear Prof Yan,
Thank you for your response.
尊敬的严老师您好:
我目前参与分析的两组被试中,第一组有114例,第二组19例,扫描时voxel为4x4x4,我若将排除头动的标准由3mm/3 degree+FD>0.2升高至4mm/4 degree+FD>0.2,第二组可增加3例被试,这样的排除头动标准审稿人会接受吗?
感谢严老师
各位老师好,
最近正在学习DPABISurf的使用,也研究了fmriprep。相比于官方的fmriprep,DPABISurf提供了更好的交互界面(用户体验),以及后续的一系列处理,如regress out nuisance, smoothing,filtering ..., 十分方便,感谢DPABI团队提供如此优秀的工具包。在使用的过程中我也遇到了一些问题,希望各位老师指教。
1) 关于fmriprep提供的volume空间分辨率只有1m, 2m 和 native, 如果想要配准到3m*3m*3m标准空间怎么办?(数据的原始分辨率比较大,2m会增加计算负担,且可能信息冗余)。如果可以直接resample的话,我应该先配准到哪个分辨率(1m,2m 或者 native)?如果我的处理步骤是FunVoluWCSF的话,我应该把resample放在哪步之后比较好?
Dear professor Yan,
I'm using the dpabi toolbox to calculate functional connectivity for two group of subjects and trying to compare the result, and I have the 3 following questions:
1. Which text file I should select to put into network analysis for graphic properties: the one from 'ROISignals_FunImgARCWS' or the one from 'ROISignals_FunImgARglobalCWS'?
2. The similar one with the first: which result I should look at if I want to compare FC results between the two group: the ones from 'FC_FunImgARCWS' or 'FC_FunImgARglobalCWS'?