Diff for "AnalyzingData/check_autorecon1" - Meg Wiki
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tkregister2 --mgz --s Subject3 -fstal
Use the command

: '''tkregister2 --mgz --s <mysubjectname> -fstal'''

to compare your MRI with a Talairach template. You will see something like this:
Line 5: Line 10:

Switch between "TARGET" and "MOVEABLE" (bottom middle of display) to switch between the two views.
You can use the scaling, translation and rotation functions to improve the match between your MRI and the template. However, very few (if any) images will need editing at this stage.
If you do change something, use "SAVE REG" (top left) to save the result. You will then have to run the previous autorecon1 step again.

= Checking skull stripping after autorecon1 =

In order to check the skull stripping, use

tkmedit <mysubjectname> brainmask.mgz -aux T1.mgz

You can use the key combinations "CTRL 1" and "CTRL 2" to switch between views of your complete MRI, and the skull-stripped MRI (not surprisingly, that's your MRI without the skull). The aim is to check whether the skull was completely removed, or whether some of it is still left.
Instructions on how to fix a bad skull strip are on the [http://surfer.nmr.mgh.harvard.edu/fswiki/FsTutorial/SkullStripFix Freesurfer Wiki].

Checking Talairach transform after autorecon1

Use the command

: tkregister2 --mgz --s <mysubjectname> -fstal

to compare your MRI with a Talairach template. You will see something like this:

attachment:checktalairach.jpg

Switch between "TARGET" and "MOVEABLE" (bottom middle of display) to switch between the two views. You can use the scaling, translation and rotation functions to improve the match between your MRI and the template. However, very few (if any) images will need editing at this stage. If you do change something, use "SAVE REG" (top left) to save the result. You will then have to run the previous autorecon1 step again.

Checking skull stripping after autorecon1

In order to check the skull stripping, use

tkmedit <mysubjectname> brainmask.mgz -aux T1.mgz

You can use the key combinations "CTRL 1" and "CTRL 2" to switch between views of your complete MRI, and the skull-stripped MRI (not surprisingly, that's your MRI without the skull). The aim is to check whether the skull was completely removed, or whether some of it is still left. Instructions on how to fix a bad skull strip are on the [http://surfer.nmr.mgh.harvard.edu/fswiki/FsTutorial/SkullStripFix Freesurfer Wiki].

CbuMeg: AnalyzingData/check_autorecon1 (last edited 2013-03-08 10:02:31 by localhost)