Hi all! I am almost ready to do my first longitudinal run with Tracula. I guess that for the remaining insecurities it is probably best to stick with the default options but I'd like to be more confident with it and just wanted to ask which option to choose and why or why not:
My config file contains information about two time points of 39 subjects.
- Perform "Registration-based B0-inhomogeneity compensation" If I understand correctly, although I would have the fieldmap information this step (as well as BET) is not necessary as I can use the respective T1 weighted image (usemaskanat=1) for registration?
- Number of sticks in the ball-stick model Since last month it is possible to change the default value of 2. Would you recommend a higher value? That would give me more information also about crossing fibers, right? But if so, which value would be reasonable and why?
- MCMC burn-in iterations (default:200), iterations (default:7500) and frequency (default:5) (Why are we allowed to change these options at all?)
Thank you! Best, Vincent