FSL experts,
Of 19 T1 images representing a patient group that can not be rescanned, two T1s are truncated in the z-plane: one is cut-off at Z -48 in native space and the other at Z -73 in native space. It may be that the T1 cut-off at Z -48 will produce registration errors.
Part of the planned analyses involves FSL-FIRST hippcampal volume and vertex analyses. My concern is that the T1 cut-off at -48 in native T1 space seems to be about -20 in MNI152 space; using fsleyes, and at Z -20 in MNI space, this seems to truncate a small inferior portion of the hippocampus. As such I would expect this subject’s T1 would generate registration errors in FIRST and should not be included.
Unless I’ve miscalculated the MNI equivalent to -48 native space, it seems prudent to not include this subject, correct?
Best,
Lance
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