Hi, 

I want to do source localization on 128-channel EEG. For that, I need to create 3-layer head models for our subjects. However, our current MRI protocol only includes MPRAGE. 

I've talked with the (f)MRI team on our project about adding a single FLASH scan in their protocol. They are mainly concerned about the time requirement. 

So my questions are:

1) Is it possible to get a decent 3-layer head model just from MPRAGE using FreeSurfer or other tools like SPM? 

2) If we have to use FLASH, which protocol we should use?

I found one at https://surfer.nmr.mgh.harvard.edu/fswiki/FreeSurferWiki?action=AttachFile&do=get&target=FreeSurfer_Suggested_Morphometry_Protocols.pdf

I don't know if this is the most recent one -- is there a newer FLASH protocol that can produce decent skull boundaries and takes less time to run. 

3) Is there a FLASH protocol already imported on Bay 1 (Skyra scanner) at Martinos (where the MPRAGE was run)? If not, is it ok to run FLASH and MPRAGE on different scanners for the same subject?

I know this is a lot of questions. I really appreciate any responses. 

Thanks!