Hi Jason, it depends on what you are going to use it for. If you have a situation where distortion correction is going to be important at some point (eg, multi site study), then I would probably use the distortion corrected version. It is possible to apply it post hoc, but it is a pain. In the end, I don't think it will make much of a difference.
On 7/28/2026 12:44 PM, Jason Tourville wrote:
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Hi Freesurfer supporters, When collecting T1-weighted MEMPRAGE for input to FS recon, is it better to use the online distortion corrected RMS volume? Or the RMS volume without correction?
Best, Jason
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