Re: [Freesurfer] Pial Surfaces Cutting off Gyri

2010-04-07 Thread Sherri Novis
: Sita Kakunoori s...@nmr.mgh.harvard.edu Sent: Apr 7, 2010 12:55 PM To: Sherri Novis echot...@earthlink.net Cc: freesurfer@nmr.mgh.harvard.edu Subject: Re: [Freesurfer] Pial Surfaces Cutting off Gyri Hi Sherri, one of the control points seems to be in gray matter, which is probably causing

Re: [Freesurfer] Pial Surfaces Cutting off Gyri

2010-04-07 Thread Sherri Novis
others? Thank you - Sherri -Original Message- From: Bruce Fischl fis...@nmr.mgh.harvard.edu Sent: Apr 7, 2010 1:15 PM To: Sherri Novis echot...@earthlink.net Cc: Sita Kakunoori s...@nmr.mgh.harvard.edu, freesurfer@nmr.mgh.harvard.edu Subject: Re: [Freesurfer] Pial Surfaces Cutting off Gyri

[Freesurfer] Skull Stripping extra dura vasculature

2010-02-09 Thread Sherri Novis
Hello, I have a series of datasets with skull stripping issues - namely left over dura/vasculature in the occipital cortex, and some in frontal areas.(Attached is a jpeg of the type of issue. It's pervasive throughout the slices, across a handful of subject data.) I have rerun skull

[Freesurfer] WM.mgz corrections in the ventricles Individual Normalization

2010-01-19 Thread Sherri Novis
Hello - I have two questions: 1) I noticed on wm.mgz volumes that were segmented properly, that even when the ventricles were automatically filled in, on some slices they are somewhat patchy (partially filled in with white, with some black/blank voxels). Do these patchy wm fill-ins require

[Freesurfer] How do Control Points and Pial Surfaces Interact?

2009-09-22 Thread Sherri Novis
Hello - I am trying to compare normalized segmentation stats across groups. We are adding control points to the white matter in an attempt to push out the pial surfaces when it appears grey matter has been clipped or cut short.I am loading the following: tkmedit [SubjectID]

[Freesurfer] Aparc Stats Different versions of Freesurfer

2009-07-14 Thread Sherri Novis
Hello - I am comparing aparc stats across several groups of data, and just noticed that recently processed groups do not have corpus callosum values... which made me wonder if different versions of freesurfer will produce different aparc data... Can aparc stats from an older version of

[Freesurfer] Details about aseg Stats

2009-06-11 Thread Sherri Novis
Hello - can anyone tell me where I can find details on what aseg stats include and exclude from each measurement? The ones I need in particular are: Left-Cerebral-White-Matter Left-Cerebral-Cortex and IntraCranialVol. I'd like to understand if L-Cereb-Cortex means just gray matter,