Re: [Freesurfer] A question regarding high FA values when running DTI script

2013-03-18 Thread Douglas N Greve
The values look about right in the table. Your pipeline looks ok, thought the last step uses fa_FOLDER-NAME.mask.nii instead of the output of mri_vol2vol (fa_FOLDER-NAME.nii). doug On 03/17/2013 02:16 AM, Rotem Saar wrote: > > Hi all, > I run into somthing that seems odd to me and want

Re: [Freesurfer] A question regarding high FA values when running DTI script

2013-03-05 Thread Rotem Saar
2013/3/5 Rotem Saar > Hi > > Attached is some pictures that might help ? Is this what you meant ? > Looking at this again - something is weird but I can't say what... > I can ZIP the data of one subject and send it to you but I don't feel > comfortable asking you to personally examine it... > Hop

Re: [Freesurfer] A question regarding high FA values when running DTI script

2013-02-26 Thread Bruce Fischl
Hi Rotem that's always a problem with FA estimation (the partial volume stuff I mean). It's hard to diagnose this without seeing some images. Can you send some of the registration? cheers Bruce On Tue, 26 Feb 2013, Rotem Saar wrote: Hi Bruce,   Thanks for your answer and sorry about the

Re: [Freesurfer] A question regarding high FA values when running DTI script

2013-02-26 Thread Rotem Saar
Hi Bruce, Thanks for your answer and sorry about the delay in mine. Registration seems fine, but I came up with some questions regarding it - 1) When testing the registration, using the "compare" button, I can see both the diffusion and what is suppose to be the anatomical slices - but why do the

Re: [Freesurfer] A question regarding high FA values when running DTI script

2013-02-18 Thread Bruce Fischl
Hi Rotem that does sound high. Have you checked the registation between your diffusion data and the anatomicals? cheers Bruce On Mon, 18 Feb 2013, Rotem Saar wrote: > Hi all, > > I run into somthing that seems odd to me and wanted to consult - > I run the following script for getting the FA

[Freesurfer] A question regarding high FA values when running DTI script

2013-02-18 Thread Rotem Saar
Hi all, I run into somthing that seems odd to me and wanted to consult - I run the following script for getting the FA values from my DTI scans: 1) dt_recon --i /usr/local/freesurfer/subjects/FOLDER-NAME/DTI/I1.dcm --s FOLDER-NAME --o /usr/local/freesurfer/subjects/FOLDER-NAME/DTI --b /usr/lo