Re: [Freesurfer] distance between two points along cortical surface

On 4/11/11 09:36 , Fariba Sharifian wrote: > Hi, > How should I have the distance between two points in mm? > If I use the ?h.sphere, as all the spherical surfaces are normalized to > have 100 radius. so the geodesic distances should not be the real > distance in mm? > > Fariba > Another way is t

Re: [Freesurfer] distance between two points along cortical surface

Hi Fariba, you can scale the sphere to have the same surface area as the ?h.white, then use great circles on it. cheers Bruce On Mon, 11 Apr 2011, Fariba Sharifian wrote: > Hi, > How should I have the distance between two points in mm? > If I use the ?h.sphere, as all the spherical surfaces ar

[Freesurfer] distance between two points along cortical surface

Hi, How should I have the distance between two points in mm? If I use the ?h.sphere, as all the spherical surfaces are normalized to have 100 radius. so the geodesic distances should not be the real distance in mm? Fariba __ Fariba Sharifian, Ph

[Freesurfer] distance between two points along cortical surface

Hi, How should I have the distance between two points in mm? If I use the ?h.sphere, as all the spherical surfaces are normalized to have 100 radius. so the geodesic distances should not be the real distance in mm? Fariba __ Fariba Sharifian, PhD

Re: [Freesurfer] Distance between two points along cortical

Hi Aize, great circles on the ?h.sphere should be within about 15% of the true geodesic distance. We routinely use them to estimate distances. cheers Bruce On Sat, 2 Apr 2011, caoaize wrote: > > > Hello FS Experts, > > Suppose we have two points on the cortical surface (pial for example), we >

Re: [Freesurfer] Distance between two points along cortical

It is very good to know FS has this function. It will be very helpful for us. Thanks. Aize > Date: Fri, 1 Apr 2011 13:57:23 -0400 > From: rudo...@nmr.mgh.harvard.edu > To: caoa...@hotmail.com > CC: freesurfer@nmr.mgh.harvard.edu > Subject: Re: [Freesurfer] Distance between t

Re: [Freesurfer] Distance between two points along cortical

This question comes up sometimes -- and the short answer is 'yes', there is a tool that can allow you to do this. Although it will be available in the next version of FS (5.1), it is still a bit rough around the edges. It is called 'mris_pmake' and to use it to determine the distance between two po

[Freesurfer] Distance between two points along cortical

Hello FS Experts, Suppose we have two points on the cortical surface (pial for example), we want to know the distance between these two point along cortical surface (not direct distance). Does FS report this kind of distance? Any suggestion will be very appreciated. Aize