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data format for tracking

UserPost

12:01 pm
January 12, 2012


khamael

New Member

posts 1

Hi there,

 

I want to feed my own data (my own algorithms) to diffusion toolkit's tracking system. As I understand, the data should be NIFTI, and it's expected _odf.nii (181 directions covering half the sphere) and that _max.nii file with a 1 where the local vector is a maximum, so there will be 181 0s and 1s per voxel. Right?

My question is in the translation of my data into the _odf 181 directions. How are these directions calculated? Is it a standard tessellation of icosahedron or something like that? How you guys calculate the maxima of HARDI reconstruction? Mesh analysis?

 

Well, these are my question for now!

Thanks in advance!

Paulo

3:21 pm
January 17, 2012


Ruopeng

Admin

posts 406

Hi Paulo,

The 181 directions can be found here: http://trackvis.org/dtk/181_vecs.txt. The maxima is determined based on the neighbor indice here: http://trackvis.org/dtk/neighb….._pairs.txt.

Best,

Ruopeng