 |
 |
Hi all! I have a question regarding the interpretability of FA and MD maps constructed from the following DTI acquisition sequence. The first so-called B0 volumes are in fact diffusion-weighted with b=100, the actual diffusion sequence having b=1000. Unaware of that at first, I used DTFIT with 0, 0, 0 as bvalues for the first volumes and got FA values that were compatible with the tissue types. Moreover, during my TBSS analysis, a correct FA skeleton was successfully obtained with threshold = 0,2. How did that affect my results? Will FSL manage "B0" volumes with non zero bvalues? Is the present analysis valid, even though the bvalues aren't correct? Thank you for you help!