Re: [Freesurfer] Pial Edit on Atrophied Brain

-- On Wed, 6 Oct 2010, Soon Hock Wei wrote: > Dear All: > > Just to follow up with my previous enquiry, is there any suggestion/advice over this pial edit issue? > > In addition, I would like to ask one more question if possible: > I understand that the pial surface is created by expanding the WM surface. Hence, is there any parameter (maybe to mris_make_surfaces command) that I can adjust to allow for more expansion? Meaning the pial boundary will be "pushed" further from WM surface? I know the end-result maybe be worse but just for the sake of curiosity. > > Thanks! > > Regards, > Hock Wei SOON > > > > -----Original Message----- > From: Soon Hock Wei > Sent: Tuesday, September 28, 2010 8:49 AM > To: 'freesurfer@nmr.mgh.harvard.edu' > Subject: RE: [Freesurfer] Pial Edit on Atrophied Brain > > Hi: > > Thanks for the reply! Attached is the image. > > Regards, > Hock Wei SOON > > -----Original Message----- > From: Bruce Fischl [mailto:fischl@nmr.mgh.harvard.edu] > Sent: Monday, September 27, 2010 11:49 PM > To: Soon Hock Wei > Cc: freesurfer@nmr.mgh.harvard.edu > Subject: Re: [Freesurfer] Pial Edit on Atrophied Brain > > could you send us an image to illustrate what you mean? > On Mon, 27 Sep 2010, > Soon Hock Wei wrote: > >> Dear All: >>   >> I am working on MRI images of subjects suffered from dementia. In severe >> cases, atrophy is observed where the white matter loss causes reduced >> white/gray differentiation. Hence, the pial surface generated from the >> autorecon2 does not include what is clearly atrophied cortical tissue >> without the underlying white matter. >>   >> I could not find any way to manually correct for this pial surface (i.e. >> to expand the surface outward to include the atrophied cortical tissue). >> The nearest wm surface is far away due to white matter loss. Can anyone >> please give me some advices? >>   >> Any suggestion is appreciated. >>   >> Regards, >> Hock Wei SOON >> >> > > > 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. > > _______________________________________________ > Freesurfer mailing list > Freesurfer@nmr.mgh.harvard.edu > https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer > > >