Hello, Bruce,

The talairach transform do fail, but I check the transform manually with tkregister2,  it looks ok to me.
Then, what should I do?

Thanks!
Guang

> Date: Fri, 14 May 2010 13:50:18 -0400
> From: fischl@nmr.mgh.harvard.edu
> To: freesurfer_zg@hotmail.com
> CC: freesurfer@nmr.mgh.harvard.edu
> Subject: Re: [Freesurfer] negative ICV volume
>
> Hi Guang,
>
> check your talairach transform to see if it failed.
>
> cheers
> Bruce
> On Fri, 14 May 2010,
> Guang Zeng wrote:
>
> >
> > Hi, there,
> >
> > Recently, I ran a subject through FreeSurfer 4.5.0.
> >
> > I load the segmentation results using tkmedit, it looks fine to me.
> >
> > But, from both aseg.stats and wmparc.stats, I read a negative ICV volume,
> >
> > # subjectname 01290403_20080924
> > # BrainMaskFile mri/brainmask.mgz
> > # BrainMaskFileTimeStamp 2010/05/06 18:15:29
> > # Measure BrainMask, BrainMaskNVox, Number of Brain Mask Voxels, 1284740, unitless
> > # Measure BrainMask, BrainMaskVol, Brain Mask Volume, 1284740.000000, mm^3
> > # Measure BrainSegNotVent, BrainSegVolNotVent, Brain Segmentation Volume Without Ventricles, 847219.000000, mm^3
> > # Measure BrainSeg, BrainSegNVox, Number of Brain Segmentation Voxels, 897849, unitless
> > # Measure BrainSeg, BrainSegVol, Brain Segmentation Volume, 897849.000000, mm^3
> > # Measure IntraCranialVol, ICV, Intracranial Volume, -1057.998574, mm^3
> >
> > Did anyone meet this kind of problem before?
> >
> > Thanks!
> > Guang
> >
> >
> >
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