Hi Heather, the ICV is mostly unrelated to the other volumetric 
measures. what do you mean that you are having problems getting ICV to 
fit correctly in your sample?
doug

Lugar, Heather wrote:
>
> We are having a difficult time getting the ICV to fit correctly in our 
> sample, but the segmentions and parcellations look accurate.  I 
> believe that the ICV is generated from the talairach.xfm early on in 
> the processing stream, but then further processing for 
> segmentations/parcellations is done. 
>
>  
>
> So, does the ICV measure affect regional brain volumes in any way, or 
> can we trust the volumetric measures to be accurate even if the ICV is 
> not? 
>
>  
>
> Thank you,
>
> Heather Lugar
>
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