Hi Kaiming, I can't say for certain looking at that one slice, but I'm pretty sure it's fine. What you can do is make the surfaces for one hemi a different color than the other hemi, then pan through in the sagittal view and you should see one set of surfaces go out as the other comes in. Also, we always recommend looking at suspected errors in multiple views. -Louis

On Tue, 11 Mar 2014, Kaiming Yin wrote:

Hi Louis, Thanks, so should this be amended or can be simply left there which may not influence the stats results and further comparison?

Great thanks, Kaiming

On Mon, Mar 10, 2014 at 8:01 PM, Louis Nicholas Vinke vinke@nmr.mgh.harvard.edu wrote: Hi Kaiming, I'm almost certain you are right at the medial line and what you are seeing is the transition from one hemi to the other.  Most likely the brain is slightly oblique and so the sagittal slice does not perfectly bisect the two hemispheres. -Louis

  On Mon, 10 Mar 2014, Kaiming Yin wrote:

        Hi FreeSurfer guys,

        Just want to ask a quick question. So I have been using freesurfer on the
        analyses on my brain-
        however I have noticed in certain parts, there hasn't been any
        segmentations.

        I have attached a picture, to show what I mean. Is there a reason for
        this? The blurry part kind
        of sweeps across the whole brain. Is there anything then, that I can do
        in freesurfer to still
        allow it to calculate the segmentation?

        Many thanks,
        Kaiming

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