[Mristudio-users] Questions regarding Transformation in Landmark

[susumu mori]

Hi all,

I made a PPT presentation showing how you can recalculate normalized maps
based on a normalized tensor file.

Please go to, https://www.mristudio.org/wiki/user_manual/landmarker and see
"Step one: Recalculation of DTI Maps from a Normalized Tensor File"

To obtain the normalized tensor file, you can follow other "Step One"
sections of "Getting Started".

Hope this will help.

Susumu

On Wed, Jun 24, 2009 at 8:12 AM, [Seongjin] <choisj70 at gmail.com> wrote:

> Hi HTH,
>
> When I tried to read normalized tensor.d file, I need to load DTI data with
> gradient table, but these are not generated from Landmark. As far as I get,
> all of them are updated FA, ADC, tensor file etc.
>
> When I start with data before normalization read and I can open the tensor
> file. Otherwise there is no way to read tensor file. I wonder if I am doing
> correctly. Do you know other way to read tensor file only?
>
> Thanks in advance.
>
> -SC
>
> On Fri, May 1, 2009 at 7:08 PM, darshan pai <darshanp20 at yahoo.com> wrote:
>
>> no you do not transform the vector file. you have the tensor right . You
>> open the tensor in DTIStudio using the Open .d button, choose the tensor .
>> It asks you for options regarding if you want to make eigen vectors FA , RA
>> etc . Let it run, it will make all the files , just save what you need .
>>
>> HTH
>>
>> ------------------------------
>> *From:* [Seongjin] <choisj70 at gmail.com>
>> *To:* "DTI Studio, ROI Editor, Landmarker Questions/Support" <
>> mristudio-users at mristudio.org>
>> *Sent:* Friday, May 1, 2009 4:43:27 PM
>> *Subject:* Re: [Mristudio-users] Questions regarding Transformation in
>> Landmark
>>
>> Thanks for you reply.
>>
>> I guessed *.ani file will be the same. However, regarding *.vec file, I
>> were warned not to transform vector file. I have no idea on this. Anyone who
>> knows the answer?
>>
>> -SC
>>
>> On Fri, May 1, 2009 at 3:18 PM, darshan pai <darshanp20 at yahoo.com> wrote:
>>
>>> *.ani is the updated_FA file
>>> and *.vec is the updated eigenvector0 file.
>>> I think the format for both is *.dat .. just different extensions to
>>> differentiate I guess ..
>>>
>>> ------------------------------
>>> *From:* [Seongjin] <choisj70 at gmail.com>
>>> *To:* "DTI Studio, ROI Editor, Landmarker Questions/Support" <
>>> mristudio-users at mristudio.org>
>>> *Sent:* Friday, May 1, 2009 12:01:05 PM
>>> *Subject:* [Mristudio-users] Questions regarding Transformation in
>>> Landmark
>>>
>>> I have data sets having reduced field of view compared to template in the
>>> Landmarker.
>>> I simply used linear AIR for space normalization.
>>>
>>> Translation and non-linear AIR seems not available for data of different
>>> dimensions from the template.
>>>
>>>
>>> Q1. I wonder what other restrictions in the space normalization or
>>> transformation by using Landmarker.
>>>
>>> Q2. After transformation, I would like to do fiber tracking in DTI
>>> Studio. What steps should I go through?
>>>       I tried to use "Fiber Tracking" in DTI Studio main menu, however it
>>> asked to load "*.ani" file and "*.vec" file.
>>>       Those files were not generated at all from the normalization.
>>>       I have updated FA, eigenvalue, tensor and AlignlinearOuptut.air.
>>>
>>> Thanks in advance.
>>>
>>> -SC
>>>
>>>
>>>
>>> _______________________________________________
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>>> Mristudio-users at mristudio.org
>>> http://lists.mristudio.org/mailman/listinfo/mristudio-users
>>>
>>>
>>
>>
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