[Mrtrix-discussion] Motion affects worse HARDI or regular DTI?

[Dorian P.]

Dear list,

I have done tractography on DTI (32 orientation, b850) using a
deterministic algorithm. After trying HARDI with probabilistic (60
orientation, b3000), it looks like out of the scanner images can be more
affected by motion in HARDI than regular DTI. However, when I do
tractography I can still get better results with HARDI, even in cases with
motion or with brain edema (without even correcting for motion). It looks
like the CSD algorithm combined with subvoxel seeding is giving an
advantage.

What is your opinion on this? Does HARDI/CSD tolerates motion better in
practical terms despite looking worse out of the scanner?


Thank you.
Dorian
TJU
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