Hi Antonella
Are the sequence parameters the same? The way you convert should have no effect
Bruce


On Jul 27, 2011, at 11:51 AM, Antonella Kis <atorok9@yahoo.com> wrote:

Hi Bruce,

I highly appreciate your great help/advice.

Unfortunately, today I have another question: I finished running the recon-all for the new subjects for which I converted the dicom files in the NIFTI format as you advised me, using mri_convert. I was telling you that the .nii.gz file for this new subjects are very big , around 38 MB. Today I was analysing the volumes and I see there is a poor image in comparison with my other brains that were converted in a NIFTI format (having just 4 MB size) by someone else before me.

My question is: is this poor image due to a different conversion way (I understood the other person used Mricron to convert the files) OR I need to do manually corrections adding control points for the intensity normalization.

What is your suggestion/advise?

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>
Sent: Tuesday, July 26, 2011 5:53 PM
Subject: Re: [Freesurfer] Loading atlases

Hi Antonella

the atlas is not guaranteed to be correct. If it were we would just take the labels from it :) The only way to tell if it is correct is to look at the segmentations on top of the MR and see if they follow the visible boundary

To get the surfaces you should do

tkmedit SUBJECT1 brainmask.mgz lh.white \
        -aux T1.mgz -surfs \
        -segmentation aseg.mgz $FREESURFER_HOME/FreeSurferColorLUT.txt

cheers
Bruce



On Tue, 26 Jul 2011, Antonella Kis wrote:

> Hi,
>
> I would like to check if my subcortical segmentation is correct so I was running:
>
> tkmedit SUBJECT1 brainmask.mgz \
>         -aux T1.mgz -surfs \
>         -segmentation aseg.mgz $FREESURFER_HOME/FreeSurferColorLUT.txt
>
> 1).  Pial (red line), and white (yellow line) surfaces are shown and I wonder how  I can add a green lie for my orig surface?
> 2). After I load the aparc+aseg.mgz is theer a way to load and overlay  the original/correct atlas so I can see if my segmentation is correct?
>
> Thank you very much.
> Antonella
>
>


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