Hi everybody,
I have a question regarding the meanf2samples.nii.gz output of
bedpostx. As i understand it shows in which voxels the data support a
second fibre orientation. I have been looking at my data and compared
them to the data in the tbss practical dataset. At first I was very
happy since it seems that the data support a lot of second fibre
orientation.
But when I use probtrackx on the dataset I just don't get reliably
tracking. Even V17-left-right connections (with Callosum as waypoint)
I don't get any results. I checked on the tutorial-data set - where it
runs fine and gives expected results. Therefore I think that that the
problem lies in the data. (my data have 32 directions, b-value 700, 3
averages - dtfit works excellent with good FA and correct color coding
- so bvals/bvecs should be ok as well)
Any idea what's going on? Is the meanf2samples.nii.gz showing that my
data is too noisy?
Thanks a lot, Michael.
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