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Hi Cornelius,
this doesn't address your issue directly and I may have simply been lucky, however, I haven't had any difficulties to process (7T) MP2RAGE data after background removal suggested by Marques et al. (https://secure-web.cisco.com/1fEVC_xpeM5msAvRKs8URofSZUL1vh4MEY9PS93M8WS4k2A... I'd omit the skullstripping, too.
Maybe this helps.
Best,
Falk
________________________________ Von: freesurfer-bounces@nmr.mgh.harvard.edu freesurfer-bounces@nmr.mgh.harvard.edu im Auftrag von Dr. Cornelius Kronlage Cornelius.Kronlage@med.uni-tuebingen.de Gesendet: Montag, 31. Januar 2022 10:14:22 An: 'freesurfer@nmr.mgh.harvard.edu' Betreff: [Freesurfer] mri_normalize error MP2RAGE
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Dear freesurfer experts,
when running recon-all (FS version 7.2.0) on skullstripped 3T MP2RAGE sequences, about 10-20% of scans from one scanner fail because of this:
mri_normalize -g 1 -seed 1234 -mprage nu.mgz T1.mgz
[...]
Iterating 2 times --------------------------------- 3d normalization pass 1 of 2 error: No such file or directory error: MRInormFindControlPoints: could not find enough control points error: No such file or directory error: MRInormFindControlPoints failed Command exited with non-zero status 253
nu.mgz as the input to mri_normalize looks good to me. I am of course happy to provide full logs and some example data - please let me know.
The exact same problem (also MP2RAGE data) has been described twice before, but I couldn't find a solution: https://secure-web.cisco.com/1r3_UfItk0odyQTEjL22mLAxycj89_vXfN--AkpFwUzred-... https://secure-web.cisco.com/1_dIFX4W-YMl78kLd-J9E7AGEkpzUy7zCtCTsFt-L6nLdAv...
Thanks you in advance and best wishes
Cornelius
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