Dear Maryam,
I think the safest is to have the input to topup mimic as closely as possible the data you intend to correct. So, same IPAT and MB as in your “full” data.
Jesper
> On 21 Nov 2017, at 09:00, Maryam Abaei <[log in to unmask]> wrote:
>
> Dear FSL expert,
>
> I wanted to know your thought about TOPUP acquisition sequences when the main DTI and fMRI have combination of multiband and parallel imaging.Should the two spin-echo fMRI/b0s with reverse phase encoding directions have MBxPI? or without any acceleration factor? or just with PI?
>
> Thank you in advance.
>
> Best wishes,
> Maryam
>
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