Hi Bruce,
Yes, we are going to combine them into a single study. Is there a place on the
wiki I can read about how to error check for these problems?
Thank you,
Jeff
> Date: Tue, 17 Mar 2009 19:39:34 -0400
> From: fis...@nmr.mgh.harvard.edu
> To: jsad...@hotmail.com
> CC: freesurfer@nmr.mgh.harvard.edu
> Subject: Re: [Freesurfer] Changing from 1.4x1.4x1.4 mm slices to 1x1x1
>
> Hi Jeff,
>
> are you intending to combine them into a single study? This can be
> problematic as you'll get differential sensitivity and possibly bias.
>
> cheers,
> Bruce
>
> On Tue, 17 Mar 2009, Jeff Sadino wrote:
>
> >
> > Hello,
> >
> > I am analyzing some subjects from several years ago when we had a protocol
> > that called for slices 1.4x1.4x1.4mm. I am also including in the study
> > more recent scans with a protocol for 1x1x1mm slices. I am using
> > freesurfer 3.0.5. I am wondering if the different slice dimensions will
> > cause differences in the analysis. As I read on a previous post,
> > freesurfer resamples all its input data into 1mm isovolumetric voxels
> > anyways, so I should be ok?
> >
> > Regards,
> > Jeff Sadino
> >
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