Voxel time courses

Hello,

I'm a masters student in biomedical engineering. I'm working on my diploma thesis 'Analysis of RS-fMRI data'.
I have 200 .hdr/.img file pairs per person which carried out pre-processing using SPM. 
 
How can I extract voxel time courses from the fMRI time series in Matlab?  

Group comparisons of rodent resting state data

Hi there,

I have rat resting-state data from rats from the following study design involved in a stem cell therapy, data was analysed using DPABI:

Pre-cells: Stroke /Sham animals imaged 3 weeks after MCAO

Post-cells: Stroke-Cells, Stroke-vehicle, Sham-vehicle (6 weeks after stem cell).

Forums:

How to perform spectral DCM analysis

Dear experts,
 
I was wondering how to perform spectral dynamic causal model (spDCM) analysis on the resting state MRI data preprocessed by DPARSFA. As I know, to perform a spDCM analysis in SPM12, I must first extract volumes of interest (VOIs) in SPM. In the manual of SPM12, before extracting VOIs, I need to regress out nuisance covariates in SPM. However, nuisance regressors have been regressed out when the data are preprocessed in DPARSFA. 
 

Forums:

Conjunction analysis

Dear Chao-Gan,

I have examined ALFF abnormalities in two type of patients and I would like to examine the shared abnormalities. Acctually, I have tried to use SPM to do a conjuntion analysis, but SPM seemed to require the spm.mat file which I did have, so I was wondering that can I achieve this goal using DPABI? 

Best,

Vincent

Forums:

Motion regressors - temporal derivatives

Dear Dr. Yan,

first of all, thank you for the wonderful tools you have created, which provide a great service to our community.

Forums:

How to view the results of F.nii after ancova analysis

Hi,

Sorry to bother you again. I  performed ANCOVA analysis with dpabi and obtained 10 nii images including the F.nii map. But I cannot view the results of F.nii using dpabi viewer. Some parameters of the F.nii can be viewed  in dpabi viewer overlay list (see below). 

Forums:

Error in DPARSFA

Hi, we are using your toolbox DPARSFA (v4.2) with matlab R2014b

We followed the tutorial concerning the folder structure.
We selected  this parameters  :

When we compute the data, we have the following error message :

Forums:

What's wrong with my normalization?

I can't find my password back of the forum "http://rfmri.org/", and I can't creat a new account, so I post my question to the maillist directly.

Resting State Preprocessing (Graph Theory)

Hi,

i have a question regarding the preprocessing of my resting state data for a subsequent investigation based on the graph theory. The common preprocessing procedure for a subsequently graph theory based estimation include the following steps:

* despike
* slice timing correction
* 3D motion correction
* Regression with motion parameters
* Register to MNI

Regarding Aurich et al. (2015) the following steps are also recommended to use:

VBM双样本T检验时mask file的选择问题

Hi,超赣,采用DPARSFA做VBM分析,使用new segment+DARTEL处理数据,未使用mask file进行双样本T检验后,结果显示脑外组织太多,又无法使用rest1.8自带的mask模板进行双样本T检验。DPARSFA new segment 默认的分割size的大小是多少?

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