Hello MRtrix Community,
I am currently utilizing tckgen
and seeking clarifications regarding the seeding process, particularly with the -seed_image
, -seed_grid_per_voxel
, and -seed_cutoff
options.
- When using
-seed_image mask
, I noticed that not all voxels in my mask are initiating fibers. Can you explain why this is the case? How does the-seed_cutoff
parameter influence whether a voxel in the mask becomes a seed point for fiber tracking? Even if i lowered it, there were still no fibers from some parts of the mask. - I’m also interested in understanding the use of
-seed_grid_per_voxel
in conjunction with the-seed_image
option. How does-seed_grid_per_voxel
function differently from-seed_image
, and under what circumstances would one be preferred over the other? - Regarding the
-seed_cutoff
option, how does it affect the seeding process in terms of fiber tracking initiation ?
Your insights into these parameters and how they interact in the tckgen
command would be invaluable for my research.
Best regards and happy new year,
Nicolas