Hi Bruce, I see, that's really helpful, thank you!
Best, Panos > Hi Panos > > I would make an average thickness map in fsaverage space, then in matlab > divvy up the a-p direction into bins (say 100 of them) and compute the > average in each bin based on the a/p coordinate > > cheers > Bruce > On Tue, 13 May 2014, > pfot...@nmr.mgh.harvard.edu wrote: > >> Hi Bruce, >> >> Just to clarify, when you say "average the thickness along each A/P >> coordinate" do you mean by looking up at the average cortical thickness >> of >> each parcellation and then calculating their average from P->A, or is >> there another way to find the average thickness of each slice and then >> see >> how that average changes from P->A? >> Thanks again for your time, >> Panos >> >>> I see. Then measure the thickness normally, then see how it changes in >>> those directions. You could average the thickness along each A/P >>> coordinate >>> - that wouldn't be a problem. You just don't want to measure it that >>> way >>> >>> cheers >>> Bruce >>> >>> >>> On Mon, 12 May 2014, >>> pfot...@nmr.mgh.harvard.edu wrote: >>> >>>> Hi Bruce, >>>> >>>> Thank you for your reply. I was interested in looking how the >>>> thickness >>>> changes from the posterior to the anterior side of the brain and vice >>>> versa (the thickness gradient). >>>> >>>> Thank you again for your time! >>>> Panos >>>> >>>> >>>>> Hi Panos >>>>> >>>>> it would certainly be possible to make that measurement, but it >>>>> wouldn't >>>>> tell you anything biologically interesting. Why would you want to do >>>>> such >>>>> a >>>>> thing? It will reflect the (arbitrary) image slice orientation and >>>>> not >>>>> the >>>>> brain. >>>>> >>>>> cheers >>>>> Bruce >>>>> >>>>> >>>>> On Mon, 12 May 2014, pfot...@nmr.mgh.harvard.edu wrote: >>>>> >>>>>> Hi FS experts, >>>>>> >>>>>> I was wondering whether it would be possible to measure the average >>>>>> cortical thickness at a specific slice (either axial, coronal, or >>>>>> sagittal). I read in Bruce's paper: "Measuring the thickness of the >>>>>> human >>>>>> cerebral cortex from magnetic resonance images" that "Measuring the >>>>>> thickness from the coronal slice at the point indicated by the green >>>>>> cross >>>>>> would result in an estimate in excess of 1 cm." Is that always the >>>>>> case, >>>>>> or has there been a way to bypass that issue? >>>>>> >>>>>> Thank you for your time, >>>>>> Panos >>>>>> _______________________________________________ >>>>>> 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 >>>>> >>>>> >>>>> >>>> >>>> _______________________________________________ >>>> 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 >>> >>> >>> >> _______________________________________________ >> 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 > > > _______________________________________________ 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.
