Great - thanks for clarifying!
________________________________ From: freesurfer-bounces@nmr.mgh.harvard.edu freesurfer-bounces@nmr.mgh.harvard.edu on behalf of Andre van der Kouwe andre@nmr.mgh.harvard.edu Sent: Tuesday, March 5, 2019 2:57:13 PM To: Bruce Fischl Cc: Freesurfer support list; Sevinc, Gunes; Lazar, Sara Subject: Re: [Freesurfer] Processing MEMPRAGE
Yes, that's correct, it's the smaller RMS file. FreeSurfer will complain if it's supplied with a multi-frame (4 echo) volume i.e. you should get a warning if you use the wrong file.
On Tue, 5 Mar 2019, Bruce Fischl wrote:
Hi Johann
I believe that is the case, but Andre (ccd) can confirm
cheers Bruce
On Tue, 5 Mar 2019, Rusche, Johann wrote:
Dear Freesurfers,
Reading through the mailing list I understood how to process our nmr MEPRAGEs and I would like to double-check we are using unpacksdcmdir correctly.
Unpacking with unpacksdcmdir gives me two nifti files, a 4-echo nifti file (92MB) and a 1-echo nifti file (23MB). Am I correct to understand that the smaller 1-echo nifti file is the RMS created automatically? Can you confirm that this is the file that I want to send to recon-all vis-a-vis VBM processing?
From the unpacklog:
7 MEMPRAGE_tfl_mgh_multiecho_1mm_iso ok 256 256 176 4 MR.1.3.12.2.1107.5.2.19.45407.2014103021271096561867095 8 MEMPRAGE_tfl_mgh_multiecho_1mm_iso ok 256 256 176 1 MR.1.3.12.2.1107.5.2.19.45407.2014103021271165037167199
Thanks for your time!
Johann
Johann Rusche
Graduate Research Student, Lazar Lab Department of Psychiatry – Neurosciences Massachusetts General Hospital