Register function data (preprocessed by fmriprep) to DWI space

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Hi MRI experts

I want to register the function data to DWI space.

My plan is to use my fmriprep preprocessed data and apply the transform data that combine the orig :arrow_right: boldref , boldref :arrow_right:T1 and T1 :arrow_right: b0_ref. (The first two transform matrix acquired by fmriprep).Is this a good way, and are there other better ways to registre from function data to dwi space?

Meanwhile in continuing the above description I have some questions. Firstly, where I can find the right functiondal data to register.

Secondly, I found each volume has different transform data to register to boldref. I may need to run antsApplyTransforms once for each volume. Is there a simpler way to Fulfille my purpose? For example,Does setting b0_ref as a standard space (–output-spaces b0_ref) achieve what I’m trying to do?

I would greatly appreciate any kind of guidance that you could provide me in this regard. Thank you!

Yufeng

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