1. mprage in general has higher CNR and lower SNR than non
inversion-prepared T1w sequences like FLASH. THe -mprage switch takes
advantage of this to loosen the intensity gradient threshold in the region
filling of the wm.
2. If you just leave out the -mprage switch it will revert to the default
On Tue, 3 Sep 2019, Rovai
External Email - Use Caution
From the ReconAllTable
(https://surfer.nmr.mgh.harvard.edu/fswiki/ReconAllTableStableV6.0) I see
that the mri_normalize step (producing the T1.mgz file) has the -mprage
I have two questions:
1. What is this option doing exactly? There is no description in the
mri_normalize man page
(https://surfer.nmr.mgh.harvard.edu/fswiki/mri_normalize); similarly, the CLI
help doesn’t mention this option.
2. How do I change this when launching a ReconAll without re-writing a custom
pipeline? (For context our T1 is not MPRAGE and we had some segmentation
issues so this is an attempt to debug this).
Thanks for you help
Lien vers Disclaimer
Freesurfer mailing list