Hi Chen

sorry, I don't really understand your question. If you have a single mprage here is no motion correction to be done. If you mean within-scan motion you could look at the noise in an ROI outside the head, but we don't typically quantify this. What difference between ROIs are you looking for? Can you give us more information about what biological effect you are trying to find and what technological artifacts concern you?

cheers Bruce

On Sat, 11 May 2019, chen wrote:

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Dear All, I ran recon-all using single MPRAGE data set. According to my results, there exsit difference betwe en ROIs. So, i want to check the difference between the originate image and the images after motion and NU intensity correction to confirm the most variation area. How can i get this information?

I am looking forward to your kind suggestions.

Best regards,

Jiachen

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