[Neuroimaging] Tractography normalization

[JB Poline]

Hi,

I was curious about the IIT license: does anyone understand

"
(2) You may not alter, transform, adapt or build upon the information,
images or data;
"

so : "build upon the information" is a bit vague : I guess you cannot
create an atlas or anything from it, you have to use it as it is ? That
seems bad - but may be I missed something ?

cheers

JB



On Tue, Aug 4, 2015 at 6:25 PM, Eleftherios Garyfallidis <
garyfallidis at gmail.com> wrote:

> Hello,
>
> On Tue, Aug 4, 2015 at 7:21 PM, Jorge Rudas <jrudascas at gmail.com> wrote:
>
>> Thanks for your answer Eleftherios
>>
>> One questions more...
>>
>> Be happy to ask as many questions as you need until everything is clear.
> I am sure you will need
> feedback from us to perform such an analysis. That is because although we
> are currently working on making
> easy workflows, right  now you will need write your own scripts combining
> different DIPY tutorials of the
> development version.
>
> Of course I am more than happy to help you with this.
>
>
>> When you say "then apply the deformation fields to the tractographies",
>> what exactly does this mean ?
>>
>> You will generate streamlines and FA maps in the native space of every
> subject. Then you can for example register
> the FAs to an FA template. After you have performed this registrations you
> will also have saved the deformation fields
> which were applied to the FAs so that they can be registered to the FA
> template. Because the tractographies were
> in the same space (native) as the FAs the same deformation fields can be
> used to warp them to the FA template space
> and in that way your tractographies will also be normalized.
>
> Cheers,
> Eleftherios
>
> p.s. As an FA template I recommend using the IIT atlas.
>
>
>> Regards
>>
>>
>> *Jorge Rudas*
>>
>>
>> 2015-08-04 15:55 GMT-05:00 Eleftherios Garyfallidis <
>> garyfallidis at gmail.com>:
>>
>>> Hi Jorge,
>>>
>>> This is a very active research area in DIPY. There are currently two
>>> ways:
>>>
>>> a) You can register FA images together using our image registration
>>> functions and then apply the deformation fields to the tractographies.
>>>
>>> b) Segment bundles from the tractographies (manually or automatically)
>>> and register them directly using the SLR. Paper here
>>>
>>> http://www.ncbi.nlm.nih.gov/pubmed/25987367
>>>
>>> Cheers,
>>> Eleftherios
>>>
>>>
>>>
>>> On Tue, Aug 4, 2015 at 4:14 PM, Jorge Rudas <jrudascas at gmail.com> wrote:
>>>
>>>> Hi everyone
>>>>
>>>> Any suggestions for to spatial normalization of tractographys?. I want
>>>> compare tractographys at population level.
>>>>
>>>> regards,
>>>>
>>>> *Jorge Rudas*
>>>>
>>>> *National University of Colombia*
>>>>
>>>>
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>>
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