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BrainModes / TVB-empirical-data-pipeline

Empirical processing pipeline for The Virtual Brain
http://dx.doi.org/10.1016/j.neuroimage.2015.03.055
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Q Can handle two DTI runs? #3

Open maedoc opened 9 years ago

maedoc commented 9 years ago

I have some data with two DTI runs, anterior-posterior and posterior-anterior. How can I incorporate both in the tractography?

srothmei commented 9 years ago

Are those runs you have two 4D time series? Basically, you could concatenate the two 4D-imagefiles by using e.g. FLS's fslmerge tool. After this step you would also have to merge the b-vectors and b-values into a single ASCII file. Note that you also have to pay attention to keep the ordering of these two blocks of vectors/scalars consistent with the ordering of your merged 4D-imagefiles.

Are you trying to use this reversed phase recording to improve eddy-current correction like FSL eddy does? http://fsl.fmrib.ox.ac.uk/fsl/fslwiki/EDDY/UsersGuide This step is not yet implemented in the pipeline because we didn't had access to such data yet.

I assume you used the same b-value for both dw-MRI runs? Otherwise this will not work using MRTrix since it does not yet support multi-shell measurements.