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Question Posted 10/22/20:
I would like to map DTI image with T1w image, For that which DTI image and T1w image should I download from ADNI? Is it ok, if I download the AXIAL DTI and T1w of the same subject in different session. Thanks
Response posted 10/23/20 by Rob Reid:
Use the DTI and T1w images from the same session for each subject. Any scan session that had a DTI would have had a T1w, so there should be no need to cross sessions.

You will need to synthesize a T1-like contrast from the full (4D) diffusion image, which I believe requies downloading the DICOM. See http://brainsuite.org/processing/diffusion/pipeline/
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