Dear MRtrix developers,
I am currently using tckgen to do tractography and I am interested in starting the tracking on a specific direction. This is helpful since in the region that I am tracking different bundles cross, and I am interested in only one of them. For what I saw in the source code, the initial direction that I give is being “rotated”. The code in particular is: “rotate_direction (d, random_direction (max_angle, sin_max_angle));” where the parameters come from here.
To clarify, is this trying to rotate my initial direction in order to bring it closer to a peak in the ODF? If this is the case, I will be very glad actually, since my initial direction is somehow close to the “real one” of the bundle, but is not necessarily very precise.
Thanks for your time!
Best Regards,
Guillermo Gallardo.