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Forum Diffusion Toolkit Usage can not read tmp.nii

can not read tmp.nii
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UserPost

7:32 am
July 15, 2010


Qiang Yu

New Member

posts 2
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     Hi, everybody,  I try to use Diffusion Toolkit to generate trk file, but after I click the run icon, they show me the following error:

 

Reading raw data…43.8%

** nifti_RCI: dims[4] >= nim->dim[4] (21,21) Can not read file C:DOCUME~1ADMINI~1LOCALS~1Tempdtk_tmptmp.nii

Process aborted due to error.

 

and I don't know how to solve it.  Thanks for your help.

11:10 am
July 15, 2010


Ruopeng

Admin

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This appears that the tmp.nii (generated by DTK from the original dicom files) has different dimension than the program is expecting. The reason could be you picked the wrong gradient table (with different number of gradients) or set the number of b0 wrong. Can you post the whole log text?

Ruopeng

9:15 pm
July 15, 2010


Qiang Yu

New Member

posts 2
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So surprising that today I do it again and is ok without problem.Surprised

 

Thanks  Ruopeng.

12:45 am
July 17, 2010


meikei

Member

posts 5
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Post edited 6:02 am – July 17, 2010 by meikei

Hi Ruopeng,

I met the same error. I think you are right that picking the wrong gradient table is the cause of this error. However, the number of directions of my DTI data is 25. But I can't find a suitable gradient table in DTK to fit it. I wonder where can I download a "mgh_dti_025"?

Thanks very much for your kind help!

 

Meikei

12:22 pm
July 19, 2010


Ruopeng

Admin

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Post edited 4:23 pm – July 19, 2010 by Ruopeng

Hi Meikei,

Did you use the DTI sequence from MGH? If not, your gradient directions could be different. You need to check with your technician or person who knows the details about the sequence.

Ruopeng
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