[Mristudio-users] Problem loading fiber tracks

[susumu]

Hi Aliya,

Usually this message happens when the image matrix or pixel size doesn't
match with the fiber file.

Could you do a simple test? Do a fiber tracking, save a result, close the
program, restart it, load the FA map you used, and load the tract using the
#2 method.

If DtiStudio failed this simple test, please send us your FA image and the
tract file. We will look into the issue. Pleas make sure that all image
parameters are identical in the first and the second image loading.

Susumu

-----Original Message-----
From: mristudio-users-bounces at mristudio.org
[mailto:mristudio-users-bounces at mristudio.org] On Behalf Of Aliya Gifford
Sent: Tuesday, January 27, 2009 2:48 PM
To: mristudio-users at mristudio.org
Subject: [Mristudio-users] Problem loading fiber tracks

Hi - 

I have a question about loading previously created fiber tracks in DTIStudio
that I'm hoping someone can help me with.

I have used DTIStudio to create fiber tracks by selecting "File -> Fiber
Tracking" and opening the desired *.fa and *.vec files and inputting the
parameters and creating the fiber tracts from the images.  This was no
problem.

The problem comes in trying to re-load the fiber tracts back onto the
original image.  What I want to do is have the image from which I created
the tracts and open all the fiber tracts at the same time so I can see them
on the image.  I have tried doing this in two methods.  
1) Re-open the .fa and .vec files as if I will re-track the files.  Then
click on the "Fiber" tab and open the fiber file.  When I do this I get an
error saying the image parameters do not match.  When the fiber is then
displayed on the image it is in the wrong place.
2) Open the image file from going to "File - > MRI View3D" and inputting the
correct image parameters.  Then going to "File -> Load Fiber-Data" and
opening the fiber tract file.  But the same error appears saying the image
parameters do not match.

Any help with this issue would be greatly appreciated!

~Aliya

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