[Camino-users] number of iterations for probabilistic tractography

[Philip A Cook]

You can run the tracking twice for a given number of iterations, and evaluate at what point the test/retest reproducibility is good enough for you.

On Nov 25, 2013, at 2:15 PM, Mojdeh Zamyadi <mojdehzm at gmail.com> wrote:

> Hi all,
> 
> I'm using probabilistic tractography for thalamic parcellation using the following command and I was wondering if there is an optimal number of iterations? Is 1000 iterations good enough or should use a higher numebr (eg. 5000 as I've seen in some manuscripts)
> 
> track -inputfile DTI_ec_VoxelOrder.Bfloat -inputmodel bayesdirac_dt -schemefile bvec_rot.scheme -iterations 1000 -seedfile thalamus_only.nii.gz -brainmask B0_brain_mask.nii.gz -pointset 0 > bayesianTracts.Bfloat
> 
> Thanks,
> -Mojdeh
> 
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