Hi Bruce, As per this paper: https://elifesciences.org/articles/29285#abstract (Figure 1—figure supplement 4), Local GI is ratio of two quantities and as per this http://en.citizendium.org/wiki/Gyrification, GI is also ratio of two quantities.
So both GI and LGI should be 'unitless' as per these papers. But again, e.g. http://www.sciencedirect.com/science/article/pii/S2213158215000856 indicates GI in 'mm'. Are there any typos or I am misunderstanding something here? Thanks. On Fri, Dec 22, 2017 at 8:45 PM, Bruce Fischl <fis...@nmr.mgh.harvard.edu> wrote: > Are you confusing GI with LGI? > > On Dec 22, 2017, at 4:33 PM, Martin Juneja <mj70...@gmail.com> wrote: > > Hi, > > I came across several papers e.g. http://www.sciencedirect. > com/science/article/pii/S2213158215000856 where gyrification index (GI) > is indicated in 'mm'. > > By definition GI is the ratio of two quantities: inner contour/outer > contour (http://en.citizendium.org/wiki/Gyrification), therefore, > shouldn't GI be 'unitless' then? > > I am not sure which way is this correct? > > Thanks. > > _______________________________________________ > Freesurfer mailing list > Freesurfer@nmr.mgh.harvard.edu > https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer > > > _______________________________________________ > 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. > >
_______________________________________________ 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.
