Yes, that was actually a mistake on my part. It does go between -200 and +200. doug
On 10/16/2012 11:02 AM, Phil Greer wrote: > I do not have a question on how to use the program, the wiki covered that > well. > > My question is about the formula embedded in the program to calculate the > contrast. > > The formula is ((wm-gm)/((wm+gm)/2))*100 > > This creates a dynamic range of -200 to +200. Which the last time I checked > is not really a percent as the command name implies. > > Was there some reasoning behind this that I am missing? > > Phil Greer > University of Pittsburgh > _______________________________________________ > 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.
