Hi - jesper just means if you acquired multiple B0 for a given
subject's scan session you should average them and use that average B0.
Cheers.
On 12 Mar 2008, at 17:10, Carlos Faraco wrote:
> Jesper and Mareike,
>
> Thank you both for your responses.
>
>> If you run eddy_correct first it will correct for the movements (as
>> well as eddy current-induced distortions) and all the images will be
>> in the same space. That means that you will only have to register the
>> fieldmap to one of the images (e.g. the average of your b=0 images),
>> and then it can be applied to all of them.
>
> However, I do have a question for Jesper. What do you mean by
> registering
> the fieldmap to the AVERAGE of my B0 IMAGES? I thought I would just
> have to
> register the fieldmap to the DTI B0 for that subject. Also, I
> imagine that
> in order to register to a B0 image I would have to make the 4D DTI
> files
> into 3D, then do an fslmaths command (not sure which one) for the
> registration?
>
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