Discuss

关于提取感兴趣区值的问题

Submitted by rumen on
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老师:
   您好,我在计算完两组被试的DC之后,进行双样本T检验,把有显著差异的脑区提取出来,然后想对每组被试提取感兴趣区域的mDC值。
请问:
1.ROI的制作是用对应ALL模板中不同脑区的阈值提取脑区作为mask好还是采用以Peak点为中心的球形ROI比较好呢?
2.提取感兴趣区域是不是把每组所有被试的各ROI值提取出来,然后用SPSS统计比较两组的差异吗?可不可以对每组被试的单样本T检验校正后的cluster结果提取ROI值?
谢谢您!

DPARSF ReHo calculation problems

Submitted by chlai on
Forums

Dear REST experts:

I have some problems of process about ReHo production during DPARSF.

Running job #1
------------------------------------------------------------------------
Running 'Smooth'
Done 'Smooth'
Done

Moving Smoothed Files:subject001 OK

Removing the linear trend:

Read 3D EPI functional images: "E:\Neuroimaging database\MDD VBM\TEST\FunImgNormalizedSmoothed\subject001".............................
............................
Moving Dtrended Files:subject001 OK

Bounding box to create data with 4x4x4 voxel size in MNI space?

Submitted by jwhnavy on
Forums

Hi Dr. Yu-feng Zang and collegues,
I'm Wi Hoon in South Korea. I'd like to convert voxel size of 3x3x3 to 4x4x4 in MNI space using DPARSFA or SPM. 
Could you tell me bounding box imformation for 4x4x4 voxel size (e.g., [-90 -126 -72; 90 90 108] for 3x3x3 voxel size)?

Best,
Wi Hoon

VMHC within DPARSFA pipeline

Submitted by druzgal on
Forums
I've have a question doing VHMC within the DPARSFA pipeline. The default outputs of VHMC include both VMHC and zVMHC files. The zVMHC file seems to reflect a Z-transform of the VMHC file, performed on every voxel inside a default brain mask. However, the default mask includes the midline slice that has perfect correlation with itself. Is there a way to exclude the midline slice from the Z-transform?

Thanks,

Jason

error in DPARSFA

Submitted by Louise on
Forums

Dear teachers:
Added is the errors when running ‘new segment+DARTEL’ using DPARSFA. But when running ’segment‘ it can work well. Actually, I can find cfg_util in spm8. Could you tell me the reason? Thank you very much!
The following modules did not run:
Failed: New Segment

Added new function of "corr(i1,i2,'spatial')" in REST Image Calculator. (DONG Zhang-Ye)

Submitted by insular on
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Dear Dr. Dong

I notice a new function added into REST Image Calculator, "corr(i1,i2,'spatial')" .

What is the 'spatial' correlation between image 1 and image2?

Is there any ref. about this  'spatial' correlation?

Thanks.

REST-GCA paper mistake in formula wrriten.

Submitted by zangzx on
Forums
A wrriten mistake in transformation of F values to F' values in REST-GCA paper was pointed out by Mr. WU Guorong. We thank Mr. Wu for the correction and we confirmed the REST-GCA toolkit code is correct.
We apologize to readers for this mistake. In the readme file of REST-GCA, this formula is correctly presented. Users could download the readme file in REST-GCA section.

troubles while processing DPARSF basic edition, never happened before

Submitted by chlai on
Forums

Dear REST experts:

Recently I run the DPARSF basic edition and I faced the following wrong messages in my matlab command window

??? Error using ==> spm_slice_vol at 32
spm_slice_vol.c not compiled - see Makefile

Error in ==> spm_slice_timing at 213
slices(:,:,m) = spm_slice_vol(Vin(m),B,Vin(1).dim(1:2),1);

Error in ==> spm_config_slice_timing>slicetiming at 170
spm_slice_timing(P,Seq,refslice,timing)

Error in ==> spm_jobman>run_struct1 at 1474
feval(prog,val);