Hi Matt (or anyone else)- I am using the AnatomicalAverage script to average 2 T1 images. Can you tell me a little more about the option not to crop images (-n) and where it applies.
Thank you,
Victor Schinazi
On Jan 30, 2013, at 6:22 PM, Matt Glasser <[log in to unmask]> wrote:
> You can use AnatomicalAverage, a script Mark wrote for the HCP but has
> also included in the FSL distribution.
>
> Peace,
>
> Matt.
>
> On 1/30/13 8:02 PM, "Vincent Koppelmans" <[log in to unmask]> wrote:
>
>> Could anybody please comment on this?
>>
>> Help is greatly appreciated.
>>
>> Thanks!
>>
>> Vincent
>>
>>> Dear Mark,
>>>
>>> Thank you for your answer. I was wondering what the best way would be
>>> to average these images. Would you choose option A, B, or something else?
>>>
>>> A) Rigid (6 DOF) registration of image B to image A. Subsequently add
>>> (fslmaths -add) and average the two images (fslmaths -div 2).
>>>
>>> B) Average raw T1_A and T1_B. Rigid (6 DOF) registration of image T1_A
>>> and T1_B to the raw mean image. Average the registered images.
>>>
>>> To me, option B seems like the most fair one, as it rotates and
>>> translates both scans a little bit, and not only one scan the full
>>> amount.
>>>
>>> What do you suggest?
>>>
>>> Thanks for your help,
>>>
>>> Vincent
>>
>>
>>>> Yes!
>>>>
>>>> All the best,
>>>> Mark
>>>>
>>>> On 24 Jan 2013, at 15:45, Vincent Koppelmans <[log in to unmask]> wrote:
>>
>>>>> Hi all,
>>>>>
>>>>> I have a large dataset of T1-weighted images. Each subject has been
>>>>> scanned twice with not much more than 45 min in between two scan
>>>>> sessions.
>>>>>
>>>>> I was wondering if I it would make sense to co-register and average
>>>>> these images to increase the SNR (and eventually get a better
>>>>> segmentation).
>>>>>
>>>>> Thanks,
>>>>>
>>>>> Vincent
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