DPABI/DPABISurf/DPARSF

the criterion of remaining subjects,afeter scrubbing

Submitted by HermioneLin on

Dear all,

I want to use the data preprocessed to do the later analysis such as build a martix. But some subjects has limited timeseries when I finished scrubbing,which may result in a strange result. So I want to know how many time timeseries left in a subject( for my case ,the total time series are 180,first 5 were revoved at the very beginning part) is enough for further analysis.

Sincerely,

Lin

 

something wrong when using mutiple comparation correction in dpabi

Submitted by HermioneLin on

Dear all, 

I have troubling in using  the mutiple  comparation correction in stastical analysis in dpabi .  1.The pic1 shows the error when I was using PT with TECE . It still happened when I changed to the latest version of dpabi or using windows10 or mac system.

Normalize by dartel,what is the standard template?can i change it?

Submitted by lucy on

Hello pro Yan,

The article with data processed by dparsf was returned by the editor

And the reviewer asked us to re-do a rest-state analysis,and set the voxel size into 2*2*2 mm(3*3*3 previous by default) to map our activation analysis

Bur the results were strange and unreasonable

So i checked the normalize results,it seemed that i can not change the voxel size

Here are two normalized results for  one identical participate

请教一下用TFCE校正后结果查看的问题

Submitted by doctorsol on

视频里,严老师应该是教大家在VIEWER里导入_vox_tstat.nii这个文件,如果通过APPLY MASK功能加上_vox_tstat_fwep.nii,阈值卡0.05就可以查看最后保存下的团块。但是这时候在VIEWER里面的取值(标尺)都是P值的范围,也无法分辨存活的团块是正性激活还是负性激活,无法直接用于报告结果。

请问各位老师应该如何解决?如何在t图上显示TFCE后的结果呢?

分别用1.5T和3.0T MRI采集的数据,用standardization处理后可以比较么?

Submitted by doctorsol on

请教一下各位老师,DPABI里面提供了一个用于多中心研究的standardization的工具,我有一批分别用1.5T和3.0T MRI采集的数据用该工具处理后,可以进行比较么?

请问spm的random field theory 和dpabi viewer里的GRF是一样的吗?

Submitted by chunhuichen on

严老师好!

我的数据用spm分析,选FWE校正后没有结果,但是用dpabi 的viwer里的GRF 有一个cluster 是显著的,不知道两种矫正有什么区别?我网上搜了一些东西,说SPM的FWE默认是用的random field theory 矫正的,但是spm只是设置voxel水平的校正后p值,不像dpabi viewer 分别设置voxel 和cluster 水平的p值,因此,不知道SPM 的FWE 是不是确实用的RFT以及他的RFT跟dpabi的GRF有什么区别和联系?

另外,在spm的result结果的右下角有FWHH,我的数据是11.0 11.0 10.5,但是同一个数据用dpabi viewer的GRF估计的平滑度是8.6 8.6 8.2,这是不是说明dpabi 和spm 用了不同的算法,有什么区别呢?

打扰了,多谢指教!