Hi Michael
it's impossible to tell from the single slice whether that is correct or not. Cerebellum is also hard to give general advice about since it depends so critically on where you landmark. If you landmark too superiorly then the inferior parts of cerebellar cortex have large signal drop-off and we miss them. There are also muscles proximal to cerebellar cortex that look a light like gray matter.
Sorry I don't have anything more helpful to add Bruce
On Wed, 31 Jul 2013, Michael Kranz wrote:
Hi guys, I was just wondering approximately how often the aseg volume will need manual edits. I know the tutorial says very rarely but I noticed that most of my subjects have non-brain matter (I think) incorrectly labelled as cerebellum.
Attached is a pic of what I mean.Inline image 1
Thanks, Mike