Hi,
I'm a PhD-student working on my DTI analysis and I'm running into some problems. What i want to do is this:
1. we have 2 ROI's defined by a fMRI study (group level)
2. we'd like to use these in our tracktography analysis and track between these ROI's
3. so far, i have extracted the ROI's (using xj_view), transformed them into single subject space (using 'Deformation' toolbox in SPM8, by means of the transformation matrix created in the preprocessing of the fMRI data [*_sn.mat]). These ROI's have been coregistered to the 'nodif_brain.nii' and they align well (using the nodif_brain as reference image and an EPI as source, the transformation is then also applied to the masks).
4. the DTI scans have been processed by BedpostX
the problem:
When i enter the ROI's in ProbtrackX, specify the Bedpost directory and output directory, all goes well. However, when performing the actual tracktography it goes trough all the steps but there is no significant output. The fdt_paths file is empty.
I'm at a loss really, so i hope anyone can help! If the information above is not sufficient, please let me know.
kind regards,
Jochem Jansen
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