Dear Bruce,

Once again many thanks for helping.I am not using tracula. I used the dt_recon and I have done the registration for my FA data on the cvs space using the mri_cvs_register.  I used the GLM group analysis method after I concatenate FA from individuals into one file and used


mri_glmfit-sim \
  --glmdir Group_Analysis.glmdir \
  --grf 2 neg \
  --cwpvalthresh .025 \
  --overwrite

to cache the significant clusters after multiple comparisons so I have the uncorrected and corrected significant map but I don't know how I can see if  my FA is increasing or decreasing in controls group versus patients group.


Please advise me.

Thank you.
Antonella


From: Bruce Fischl <fischl@nmr.mgh.harvard.edu>
To: Antonella Kis <atorok9@yahoo.com>
Sent: Wednesday, January 11, 2012 11:40 AM
Subject: Re: [Freesurfer] Non_FA Group study
Hi Antonella,

can you post this type of question to the list so that others can answer?
Do you mean a map across space or within each of the tracula fascicles?

cheers
Bruce


On Wed, 11 Jan 2012, Antonella Kis wrote:

> Dear Bruce,
>
> Many thanks for your reply and your help.
>
> I will be very grateful if you can give some advise on how I can do a
> comparison between two groups for my FA data or in other words for FA group
> analysis since from the significant map I can only find the p values how can
> I see if there is an increase or decrease of the FA values for controls
> versus patients?
>
>
> Many thanks,
> Antonella
>
> ____________________________________________________________________________
> From: Bruce Fischl <fischl@nmr.mgh.harvard.edu>
> To: Antonella Kis <atorok9@yahoo.com>
> Cc: "freesurfer@nmr.mgh.harvard.edu" <freesurfer@nmr.mgh.harvard.edu>;
> "lzollei@nmr.mgh.harvard.edu" <lzollei@nmr.mgh.harvard.edu>
> Sent: Wednesday, January 11, 2012 11:13 AM
> Subject: Re: [Freesurfer] Non_FA Group study
>
> sure, that should be straightforward.
>
> cheers
> Bruce
> On Wed, 11 Jan 2012, Antonella Kis
> wrote:
>
> >
> > Dear FS team,
> >
> >
> > Can use my results from the mri_cvs_register to do a non_FA group
> analysis,
> > more exactly I am interested on the mean diffusivity (adc.nii from
> > dt_recon).
> >
> >
> > Since from the significant map I can only find the p values how can I see
> if
> > there is an increase or decrease of the FA values or how can I do an FA
> > comparison between two groups?
> >
> > Thank you very much for your time and help.
> > Antonella
> >
> >
> >
> >
> >
> >
>
>
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