Hi Pete,
yes - this can happen. Choose the best registration you can get.
Cheers,
Andreas
Am 20.04.12 16:29 schrieb "Peter Fried" unter <[log in to unmask]>:
>Thanks Andreas!
>
>I find that doing registration at the same stage as the unwarping allows
>you to get a better assessment of how successful the latter was.
>
>On a related note, I found that I get a better registration to my highres
>t1-weighted image with a diffusion-weighted image than the non-diffusion
>(b0) image. I found this out by accident the first time I ran feat using
>the whole 4d dti data file, which automatically chose the middle image as
>the example func.
>
>Could this be because the DWI is closer in contrast with the T1 than the
>non-DWI?
>
>Cheers,
>Pete
>
>On Apr 19, 2012, at 5:47 PM, Andreas Bartsch wrote:
>
>> Hi Pete,
>>
>> this is good!
>> Cheers,
>> Andreas
>>
>> PS: You don't really need 2.c, do you?
>>
>> Am 19.04.12 15:38 schrieb "Peter Fried" unter <[log in to unmask]>:
>>
>>> Hi FSL Community,
>>>
>>> Can someone confirm the appropriate order of pre-processing steps for
>>>DTI
>>> data?
>>>
>>> Specifically, does it matter whether the unwrapping (using the
>>>pre-stats
>>> option in FEAT) occurs before or after the eddy_correction?
>>>
>>> Here is what I have been doing and I just want to make sure it's
>>>correct:
>>>
>>> #1. Eddy Correction
>>> #2. Feat Pre-stats
>>> a. Unwarp
>>> b. bet
>>> c. Registration
>>> #3. dtifit
>>> #4. bedpostx
>>>
>>> Thanks!
>>>
>>> Cheers,
>>> Pete Fried
>>>
>>> Department of Anatomy & Neurobiology
>>> Boston University School of Medicine
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