Re: [Freesurfer] T1 motion and average

Hi John

sure, mri_average -rms will take the square root of the sum of squares of the 4 echoes if you want. You could then average them across the MEMPRAGEs if you want

cheers Bruce On Tue, 15 Aug 2017, John Anderson wrote:

Dear Freesurfer experts, I have noisy four MEMPRAGE images each one has four volumes for the same participant. These T1 images were acquired at the same scanning session. I have two question:

1. Is there any tool in free surfer to average these images.
2. Is the average the images a good idea to reduce noise and improve SNR
3. Do you suggest me any solution that can help to reconstruct these noisy

images.

Thank you for any suggestion John