[Dwi_test-retest-commits] dwi test-retest dataset

[Wang, Qiang]

Hi dwi test-retest team,

I am so appreciated your team share such great DWI test-retest dataset. I plan to use your open dataset for my project that comparing normative structural connectivity and individual structural connectivity in Deep brain stimulation.

Just downloaded one subject dataset (pp02). I have three questions that i not clear.  First, for each run, there are A, B, C session. Do you think is it possible that i merged these three session to one single DWI?  I found the affine matrix is different for each session, so couldn't use fsl directly merge these three A, B, and C to one right? How to do this from your opinion.

Second, what's the pp02_dwi_run01_2w means? and  what's the difference of the "2w" and without.

Third, there is no opposite acquisition direction for DWI, right? that means we couldn't do the standard topup and eddy correction for preprocessing.

Thanks so much for your help

Best wishes,

Qiang Wang
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