Re: [Freesurfer] Poor automatic segmentation of the cerebellum

Hi Sam usually this means that the cerebellum is too far from isocenter and hence has low SNR/more distortion. If you can place your subjects higher in the scanner that might help. For existing data try putting some control points in cerebellar wm or brainstem. That might help cheers Bruce

[Freesurfer] Poor automatic segmentation of the cerebellum

Dear list, I'm interested in measuring cerebellar volumes using freesurfer. However, the automatic segmentation (aseg) seems to be doing a poor job of capturing the whole structure for many subjects. Specifically, it is chopping off the bottom of the cerebellum. Here is an example: https://drive.