Dear FSL Team
I have a more general question about the design of protocols for DTI top be used with topup:
Is there an advantage to repeating the entire acquisition (all diffusion directions) with blip-up and blip-down rather than just acquiring the B0 images for one phase encode direction? For instance:
1- Acquire 128 directions with AP encode and then B0 images with PA encode
vs
2- Acquire 64 directions with AP encode and repeat 64 directions with PA encode
I am curious how the tradeoff between increased angular resolution versus double the number of acquisitions while also factoring in any potential differences in performance of topup/eddy.
Thank you in advance!
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