[Mristudio-users] Tensor matrix and the .d file

[susumu]

Hi Christian,

the tensor file contains [dxx, dyy, dzz, dxy, dxz, dyz] values at each
pixels. The dimension should be 6 x d1 x d2 x d3, where d1, d2, d3 are
dimensions of 3d volume data. 

After you finish tensor calculation by DtiStudio, you get dxx, dyy, dzz,
dxy, dxz, dyz images. You have to choose these 6 images and save in one
file, which we call "tensor file".

Hope it helps. 

Susumu

-----Original Message-----
From: mristudio-users-bounces at mristudio.org
[mailto:mristudio-users-bounces at mristudio.org] On Behalf Of Christian Bieck
Sent: Wednesday, July 23, 2008 8:12 AM
To: mristudio-users at mristudio.org
Subject: [Mristudio-users] Tensor matrix and the .d file

Hello,

Working on my DTI diploma thesis, I spent quite some time on getting
acquainted with DTIStudio and even more on getting all those AIR .exe files
compiled. I now have moved on to trying out Landmarker. To my dismay, the
"getting started" section in the landmarker user manual talks about opening
a .d file so you can normalize the tensor matrix.
I would appreciate it *very* much if someone could provide information on
what exactly the tensor matrix is (is it the tensor image I get after
pressing on the "Tensor-Eigenvalue-etc." button under DtiMap?) and how I can
save the tensor matrix as a .d file.

Sorry for this rather elementary question.

-Christian Bieck

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