Re: [Freesurfer] How to threshold an input mutli-volume?

2009-07-07 Thread
Thank you in advance for your help.
We installed the freesurfer on a ubuntu 8.04 i686 machine.

On Wed, Jul 8, 2009 at 9:57 AM, Bruce Fischl wrote:

> I guess it would be pretty easy to fix to work on multi-frame images. What
> hardware/software platform are you using?
>
> Bruce
>
> On Tue, 7 Jul 2009, [UTF-8] ?? wrote:
>
>  Hi, all.
>> Can mri_threshold  threshold an input mutli-volume file? With a seven
>> volumes NIFTI file, all voxels other than in the first volume are set to
>> zero. In addition, the help for mri_threshold options is very limited.
>> There
>> is nothing about the options.
>>
>> Usage: mri_threshold [options]   
>> This program will threshold an input volume
>>
>> Where do I get more detailed  description?
>> Best Regards.
>>
>>


-- 
Albert
Lab of Complex System and Artificial Intelligence,
Institute of Automation,Chinese Academy of Sciences(CASIA)
Beijing, 100190,P.R.CHINA
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[Freesurfer] How to threshold an input mutli-volume?

2009-07-07 Thread
Hi, all.
Can mri_threshold  threshold an input mutli-volume file? With a seven
volumes NIFTI file, all voxels other than in the first volume are set to
zero. In addition, the help for mri_threshold options is very limited. There
is nothing about the options.

Usage: mri_threshold [options]   
This program will threshold an input volume

Where do I get more detailed  description?
Best Regards.
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Re: [Freesurfer] How to "Fitting Tensors" in dt_recon?

2009-07-06 Thread
Thank you very much.
In fact, I want to insert the bet module before calculating the tensor,
eigvals, eigvecs, fa, ra etc in dt_recon. I also know mri_glmfit can create
glm-related images.
 But I can't find the tensor calculation in  (mri_glmfit --y $fec --glmdir
$OutDir --dti $bvals $bvecs).

On Tue, Jul 7, 2009 at 12:36 AM, Douglas N Greve
wrote:

> It just takes the log of the input and constructs a design matrix from your
> bvals and bvecs, then fits a glm.
>
> doug
>
> ?? wrote:
>
>> Hi, All.
>> The related item of "Fitting Tensors" is listed from the dt_recon.
>>
>> # Fit tensors
>> echo "#...@#---" | tee -a $LF
>> echo "Fitting Tensors" | tee -a $LF
>> date | tee -a $LF
>>
>> set cmd = (mri_glmfit --y $fec --glmdir $OutDir);
>> if($#bvals == 0) then
>> set cmd = ($cmd --dti $infodump)
>> else
>> set cmd = ($cmd --dti $bvals $bvecs)
>> endif
>>
>> However, I can't find any description about this argument(--dti) in
>> mri_glmfit. Did the mri_glmfit call the dtifit to fit the tensor from fsl?If
>> not, what is it?
>>
>> --
>> Albert
>> Lab of Complex System and Artificial Intelligence,
>> Institute of Automation,Chinese Academy of Sciences(CASIA)
>> Beijing, 100190,P.R.CHINA
>>
>>
>> 
>>
>> ___
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>> Freesurfer@nmr.mgh.harvard.edu
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>>
>
> --
> Douglas N. Greve, Ph.D.
> MGH-NMR Center
> gr...@nmr.mgh.harvard.edu
> Phone Number: 617-724-2358 Fax: 617-726-7422
>
> In order to help us help you, please follow the steps in:
> surfer.nmr.mgh.harvard.edu/fswiki/BugReporting
>
>
>


-- 
Albert
Lab of Complex System and Artificial Intelligence,
Institute of Automation,Chinese Academy of Sciences(CASIA)
Beijing, 100190,P.R.CHINA
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[Freesurfer] How to "Fitting Tensors" in dt_recon?

2009-07-06 Thread
Hi, All.
The  related item of "Fitting Tensors" is listed from the dt_recon.

# Fit tensors
echo "#...@#---" |  tee -a $LF
echo "Fitting Tensors" |  tee -a $LF
date |  tee -a $LF

set cmd = (mri_glmfit --y $fec --glmdir $OutDir);
if($#bvals == 0) then
  set cmd = ($cmd --dti $infodump)
else
  set cmd = ($cmd --dti $bvals $bvecs)
endif

However, I can't find any description about this argument(--dti) in
mri_glmfit. Did the mri_glmfit call the dtifit to fit the tensor  from
fsl?If not, what is it?

-- 
Albert
Lab of Complex System and Artificial Intelligence,
Institute of Automation,Chinese Academy of Sciences(CASIA)
Beijing, 100190,P.R.CHINA
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