Hello FS experts,
I am wondering if anyone knows why the same vertices' coordinates are shown slightly different when opened in freesurfer and tksurfer. I was checking some annotation files for each subject across the two on inflated surface, and noticed slight coordinate differences in RAS. ex. freesurfer vertex 2407 [-18.23, -78.84, 27.92] ----- tksurfer vertex 2407 [-18.48, -78.82, 28.23]
Best Idil
Hi Idil
we keep track of different kinds of RAS coordinates, which may not be the same (surface ras, scanner ras, etc...). cheers Bruce
On Thu, 1 Mar 2018, Yagmur Ozdemir 19 wrote:
Hello FS experts,
I am wondering if anyone knows why the same vertices' coordinates are shown slightly different when opened in freesurfer and tksurfer. I was checking some annotation files for each subject across the two on inflated surface, and noticed slight coordinate differences in RAS. ex. freesurfer vertex 2407 [-18.23, -78.84, 27.92] ----- tksurfer vertex 2407 [-18.48, -78.82, 28.23]
Best Idil
Thank you!
Best Idil ________________________________________ From: freesurfer-bounces@nmr.mgh.harvard.edu [freesurfer-bounces@nmr.mgh.harvard.edu] on behalf of Bruce Fischl [fischl@nmr.mgh.harvard.edu] Sent: Thursday, March 01, 2018 5:46 PM To: Freesurfer support list Subject: Re: [Freesurfer] tksurfer/freeview vertex coordinates difference?
Hi Idil
we keep track of different kinds of RAS coordinates, which may not be the same (surface ras, scanner ras, etc...). cheers Bruce
On Thu, 1 Mar 2018, Yagmur Ozdemir 19 wrote:
Hello FS experts,
I am wondering if anyone knows why the same vertices' coordinates are shown slightly different when opened in freesurfer and tksurfer. I was checking some annotation files for each subject across the two on inflated surface, and noticed slight coordinate differences in RAS. ex. freesurfer vertex 2407 [-18.23, -78.84, 27.92] ----- tksurfer vertex 2407 [-18.48, -78.82, 28.23]
Best Idil
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it all depends on what surface you are looking at. I think tksurfer reports coords for the ?h.orig
On 03/03/2018 02:19 PM, Yagmur Ozdemir 19 wrote:
Thank you!
Best Idil ________________________________________ From: freesurfer-bounces@nmr.mgh.harvard.edu [freesurfer-bounces@nmr.mgh.harvard.edu] on behalf of Bruce Fischl [fischl@nmr.mgh.harvard.edu] Sent: Thursday, March 01, 2018 5:46 PM To: Freesurfer support list Subject: Re: [Freesurfer] tksurfer/freeview vertex coordinates difference?
Hi Idil
we keep track of different kinds of RAS coordinates, which may not be the same (surface ras, scanner ras, etc...). cheers Bruce
On Thu, 1 Mar 2018, Yagmur Ozdemir 19 wrote:
Hello FS experts,
I am wondering if anyone knows why the same vertices' coordinates are shown slightly different when opened in freesurfer and tksurfer. I was checking some annotation files for each subject across the two on inflated surface, and noticed slight coordinate differences in RAS. ex. freesurfer vertex 2407 [-18.23, -78.84, 27.92] ----- tksurfer vertex 2407 [-18.48, -78.82, 28.23]
Best Idil
Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
The information in this e-mail is intended only for the person to whom it is addressed. If you believe this e-mail was sent to you in error and the e-mail contains patient information, please contact the Partners Compliance HelpLine at http://www.partners.org/complianceline . If the e-mail was sent to you in error but does not contain patient information, please contact the sender and properly dispose of the e-mail.
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Bruce Fischl -
Douglas N Greve -
Yagmur Ozdemir 19