Re: [Freesurfer] output of mris_anatomical_stats
Hi Marco, no, there's not a way to get 95% conf intervals out of it. sorry, doug Marco Loggia, PhD wrote: > Thanks Bruce for your prompt reply. > > The surfaces I feed to mris_anatomical_stats are actually not thickness > data, but quantitative CBF maps, calculated using arterial spin labeling. > > I am trying to extract, for each subject, the average CBF value across the > whole cortical surface. Considering this, the dispersion should be the SD of > the CBF across all vertices, right? > > Is it not possible to obtain 95% C.I. instead of the SD? > > Marco > > _ > > Marco L. Loggia, PhD > Postdoctoral Fellow, Mass General Hospital & Brigham and Women's Hospital > Harvard Medical School > > CNY Building 120, suite 101E > Charlestown, Massachusetts 02129 > Phone: (617) 643-7267 > Fax: (617) 643-7340 ma...@nmr.mgh.harvard.edu > > > -Original Message- > From: Bruce Fischl [mailto:fis...@nmr.mgh.harvard.edu] > Sent: Wednesday, February 16, 2011 11:52 AM > To: Marco Loggia, PhD > Cc: freesurfer@nmr.mgh.harvard.edu > Subject: Re: [Freesurfer] output of mris_anatomical_stats > > Hi Marco > > that is the spatial standard deviation, which probably isn't a very > interesting #. Typically the more interesting variance is cross subject. > > cheers > Bruce > > > On Wed, 16 Feb 2011, Marco > Loggia, PhD wrote: > > >> Dear all, >> >> >> >> In mris_anatomical_stats, the "average cortical thickness" value comes >> with a measure of dispersion around the mean. Is this Standard >> Deviation? If so, is there a way to plot the 95% confidence intervals >> > instead? > >> >> Thanks, >> >> Marco >> >> >> >> >> _ >> >> >> >> Marco L. Loggia, PhD >> >> Postdoctoral Fellow, Mass General Hospital & Brigham and Women's >> Hospital >> >> Harvard Medical School >> >> >> >> CNY Building 120, suite 101E >> >> Charlestown, Massachusetts 02129 >> >> Phone: (617) 643-7267 >> >> Fax: (617) 643-7340 ma...@nmr.mgh.harvard.edu >> >> >> > > > > ___ > Freesurfer mailing list > Freesurfer@nmr.mgh.harvard.edu > https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer > > > -- Douglas N. Greve, Ph.D. MGH-NMR Center gr...@nmr.mgh.harvard.edu Phone Number: 617-724-2358 Fax: 617-726-7422 Bugs: surfer.nmr.mgh.harvard.edu/fswiki/BugReporting FileDrop: www.nmr.mgh.harvard.edu/facility/filedrop/index.html ___ 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.
Re: [Freesurfer] output of mris_anatomical_stats
Thanks Bruce for your prompt reply. The surfaces I feed to mris_anatomical_stats are actually not thickness data, but quantitative CBF maps, calculated using arterial spin labeling. I am trying to extract, for each subject, the average CBF value across the whole cortical surface. Considering this, the dispersion should be the SD of the CBF across all vertices, right? Is it not possible to obtain 95% C.I. instead of the SD? Marco _ Marco L. Loggia, PhD Postdoctoral Fellow, Mass General Hospital & Brigham and Women's Hospital Harvard Medical School CNY Building 120, suite 101E Charlestown, Massachusetts 02129 Phone: (617) 643-7267 Fax: (617) 643-7340 ma...@nmr.mgh.harvard.edu -Original Message- From: Bruce Fischl [mailto:fis...@nmr.mgh.harvard.edu] Sent: Wednesday, February 16, 2011 11:52 AM To: Marco Loggia, PhD Cc: freesurfer@nmr.mgh.harvard.edu Subject: Re: [Freesurfer] output of mris_anatomical_stats Hi Marco that is the spatial standard deviation, which probably isn't a very interesting #. Typically the more interesting variance is cross subject. cheers Bruce On Wed, 16 Feb 2011, Marco Loggia, PhD wrote: > Dear all, > > > > In mris_anatomical_stats, the "average cortical thickness" value comes > with a measure of dispersion around the mean. Is this Standard > Deviation? If so, is there a way to plot the 95% confidence intervals instead? > > > > Thanks, > > Marco > > > > > _ > > > > Marco L. Loggia, PhD > > Postdoctoral Fellow, Mass General Hospital & Brigham and Women's > Hospital > > Harvard Medical School > > > > CNY Building 120, suite 101E > > Charlestown, Massachusetts 02129 > > Phone: (617) 643-7267 > > Fax: (617) 643-7340 ma...@nmr.mgh.harvard.edu > > ___ 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.
Re: [Freesurfer] output of mris_anatomical_stats
Hi Marco that is the spatial standard deviation, which probably isn't a very interesting #. Typically the more interesting variance is cross subject. cheers Bruce On Wed, 16 Feb 2011, Marco Loggia, PhD wrote: > Dear all, > > > > In mris_anatomical_stats, the "average cortical thickness" value comes with > a measure of dispersion around the mean. Is this Standard Deviation? If so, > is there a way to plot the 95% confidence intervals instead? > > > > Thanks, > > Marco > > > > > _ > > > > Marco L. Loggia, PhD > > Postdoctoral Fellow, Mass General Hospital & Brigham and Women's Hospital > > Harvard Medical School > > > > CNY Building 120, suite 101E > > Charlestown, Massachusetts 02129 > > Phone: (617) 643-7267 > > Fax: (617) 643-7340 ma...@nmr.mgh.harvard.edu > > ___ 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.
