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
The information in this e-mail is intended only for the person to whom it is addressed. If you believe this e-mail was sent to you in error and the e-mail contains patient information, please contact the Partners Compliance HelpLine at http://www.partners.org/complianceline . If the e-mail was sent to you in error but does not contain patient information, please contact the sender and properly dispose of the e-mail.