[slicer-users] Register T1 MRI image to DTI space

Juan Francisco Garamendi Bragado juanfrancisco.garamendi at urjc.es
Fri Sep 17 08:16:10 EDT 2010


Hi András,

When you say "averaged DWI images", Are you talking about getting one scalar volume from DWI gradient direction images performing a arithmetic average? there are a module in 3D slicer to do the average over DWI images?

Thanks,
Juanfran.

El 17/09/2010, a las 13:44, András Jakab MD escribió:

> Hi Thomas,
> 
> We found that it is very efficient to register the skull-stripped T1 image (brain only) with the averaged DWI images (slicer2 used to export this as av_gradient or trace-weighted image). Although it was not evaluated in detail, this approach seems more robust than the B0 -> T1 as that generally enlarges the brain a little bit.
> 
> hope that helps
> András
> 
> On Thu, Sep 16, 2010 at 4:54 PM, Thomas Ballinger <tomb at bwh.harvard.edu> wrote:
> Hello all,
> I'm wondering if anyone has a method for bringing a T1 scan into DTI space; probably through nonlinear registration of a T1 scan to the baseline (T2) scan in DTI space, but since it's DTI there's also an FA map, etc.  Is this something you've done with Slicer with any success?  Typically I'd register it to a T2, take the T2 to the baseline, and combine them to get the T1 to the baseline, but for this dataset we don't have T2's.
> Thomas Ballinger
> 
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