how do you know which is the left hemisphere? The rest is ok Bruce On Thu, 20 Jun 2013, Ray, Siddharth wrote:
Hey,
Sorry to interrupt in between. But just want to confirm on this.
Bruce, I am having same problem with orientation and the one way i inspect whether its a L/R flip or not is by opening the image in freeview in 2x2 window and then i try moving those green,red and blue slides on my 4 image and see how the marker moves on axial, coronal and sagittal view. Now since i know which is left hemisphere on 4th image, i easily check whether its a flip or not.
Please let me know, if this way is not correct.
and i think one can easily see for A/P though.
Thanks, -Siddharth ________________________________________ From: freesurfer-bounces@nmr.mgh.harvard.edu [freesurfer-bounces@nmr.mgh.harvard.edu] On Behalf Of Brigitte Dahmen [biggida@googlemail.com] Sent: Thursday, June 20, 2013 7:30 AM To: Douglas Greve Cc: freesurfer@nmr.mgh.harvard.edu Subject: Re: [Freesurfer] check orientation
Dear Doug, dear freesurfers,
thank you very much! If I'd like to change the orientation (from PSR to LAS), is there a way in Freesurfer to do it? Thanks again!
Best, Brigitte
2013/6/20 Douglas Greve <greve@nmr.mgh.harvard.edumailto:greve@nmr.mgh.harvard.edu>
If you just want to check the orientation, then you can run mri_info. It will not tell you whether the orientation is correct or not, but neither will fslhd doug
On 6/19/13 11:18 AM, Bruce Fischl wrote: Hi Brigette,
not sure how you could do this except visually. Bring the images up and verify that the directions that we specify are correct (although of course this isn't possible for L/R unless you have some type of external fiducial marker like a vitamin E tablet)
cheers Bruce On Wed, 19 Jun 2013, Brigitte Dahmen wrote:
Dear Freesurfer experts,
is there a command in Freesurfer to check for correct orientation (LAS vs. PSR) of T1 images (similar to "fslhd" in FSL)?
Thank you very much! Brigitte
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