Dear list members,
I wonder if during the inflation process "areas" are preserved. Or does inflation induces local deformations?
Best wishes,
Lukas
Lukas Scheef, MD, MSc MR-Tomography Department of Radiology University of Bonn Sigmund-Freud-Straße 25 D-53105 Bonn Fax: +49-228-287-5598 Phone:+49-228-287-4496 E-mail: L.Scheef@uni-bonn.de
Hi Lukas,
no metric properties are preserved as the inflation changes the gaussian curvature, so there must be some metric distortion. We do minimize it though, I think it's probably around 10-15%.
cheers, Bruce
On Thu, 1 Jul 2004 L.Scheef@uni-bonn.de wrote:
Dear list members,
I wonder if during the inflation process "areas" are preserved. Or does inflation induces local deformations?
Best wishes,
Lukas
Lukas Scheef, MD, MSc MR-Tomography Department of Radiology University of Bonn Sigmund-Freud-Straße 25 D-53105 Bonn Fax: +49-228-287-5598 Phone:+49-228-287-4496 E-mail: L.Scheef@uni-bonn.de
Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
Hi Bruce,
Is there a way to define regions on the inflated brains and map those back on the uninflated brain?
Best wishes,
Lukas
Datum: Thu, 1 Jul 2004 09:45:58 -0400 (EDT) Von: Bruce Fischl fischl@nmr.mgh.harvard.edu An: L.Scheef@uni-bonn.de Kopie an: freesurfer@nmr.mgh.harvard.edu Betreff: Re: [Freesurfer] inflation<-> area
Hi Lukas,
no metric properties are preserved as the inflation changes the gaussian curvature, so there must be some metric distortion. We do minimize it though, I think it's probably around 10-15%.
cheers, Bruce
On Thu, 1 Jul 2004 L.Scheef@uni-bonn.de wrote:
Dear list members,
I wonder if during the inflation process "areas" are preserved. Or does inflation induces local deformations?
Best wishes,
Lukas
Lukas Scheef, MD, MSc MR-Tomography Department of Radiology University of Bonn Sigmund-Freud-Straße 25 D-53105 Bonn Fax: +49-228-287-5598 Phone:+49-228-287-4496 E-mail: L.Scheef@uni-bonn.de
Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
Hi Lukas,
sure, you can draw labels in tksurfer. These can then be visualized or used for analysis on any of the surface configurations. The node #s are invariant across e.g. inflated, orig, white, pial, so the labels can be used on any of them.
cheers, Bruce
On Thu, 1 Jul 2004 L.Scheef@uni-bonn.de wrote:
Hi Bruce,
Is there a way to define regions on the inflated brains and map those back on the uninflated brain?
Best wishes,
Lukas
Datum: Thu, 1 Jul 2004 09:45:58 -0400 (EDT) Von: Bruce Fischl fischl@nmr.mgh.harvard.edu An: L.Scheef@uni-bonn.de Kopie an: freesurfer@nmr.mgh.harvard.edu Betreff: Re: [Freesurfer] inflation<-> area
Hi Lukas,
no metric properties are preserved as the inflation changes the gaussian curvature, so there must be some metric distortion. We do minimize it though, I think it's probably around 10-15%.
cheers, Bruce
On Thu, 1 Jul 2004 L.Scheef@uni-bonn.de wrote:
Dear list members,
I wonder if during the inflation process "areas" are preserved. Or does inflation induces local deformations?
Best wishes,
Lukas
Lukas Scheef, MD, MSc MR-Tomography Department of Radiology University of Bonn Sigmund-Freud-Straße 25 D-53105 Bonn Fax: +49-228-287-5598 Phone:+49-228-287-4496 E-mail: L.Scheef@uni-bonn.de
Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
freesurfer@nmr.mgh.harvard.edu
-
Bruce Fischl -
L.Scheef＠uni-bonn.de