How to determine a smoothing kernel size for surface that is approx. equal to 4mm in volumetric data?
Hello Freesurfer users
I'm trying to replicate my earlier findings in 3D space by warping the data into surface using freesurfer.
Previously, the 3D data were smoothed using 4mm FWHM kernel and I'm wondering what size of smoothing kernel for 2D would be equivalent to 4mm for volumes.
Any help would be greatly appreciated.
Glen
there is no equivalent. I'd start with 4 and move up. doug
On 05/30/2013 02:51 PM, Glen Lee wrote:
Hello Freesurfer users
I'm trying to replicate my earlier findings in 3D space by warping the data into surface using freesurfer.
Previously, the 3D data were smoothed using 4mm FWHM kernel and I'm wondering what size of smoothing kernel for 2D would be equivalent to 4mm for volumes.
Any help would be greatly appreciated.
Glen
Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
Hi Glen
there is no way to get an equivalent 2D kernel to the 3D one.
sorry Bruce
On Thu, 30 May 2013, Glen Lee wrote:
Hello Freesurfer users I'm trying to replicate my earlier findings in 3D space by warping the data into surface using freesurfer.
Previously, the 3D data were smoothed using 4mm FWHM kernel and I'm wondering what size of smoothing kernel for 2D would be equivalent to 4mm for volumes.
Any help would be greatly appreciated.
Glen
freesurfer@nmr.mgh.harvard.edu
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Bruce Fischl -
Douglas N Greve -
Glen Lee