What do you mean by dilate it? Katie
On Fri, Jul 1, 2011 at 2:28 PM, Bruce Fischl <fis...@nmr.mgh.harvard.edu>wrote: > you can draw a boundary between them and also click "up to boundaries" or > something like that. Or just click the center and dilate it a few times or > some combination of thresholding and dilation. It's quite flexible > > > cheers > Bruce > On Fri, 1 Jul 2011, Katie Bettencourt wrote: > > Hi Bruce, >> That's how I normally make my ROIs, but my boss is concerned that we are >> going from one area to a nearby area that is also activated by this >> contrast, so she wants to >> restrict it by a certain number of voxels from the center of activation. >> >> Katie >> >> On Fri, Jul 1, 2011 at 1:55 PM, Bruce Fischl <fis...@nmr.mgh.harvard.edu> >> wrote: >> Hi Katie, >> >> you can use the custom fill tool in tksurfer for this. Display your >> activation map at whatever threshold you want, then click in the middle of >> the blob you want >> to create an ROI for and do custom fill with "up to functional >> threshold". This will floodfill from that point outwards stopping when it >> reaches vertices that >> are below threshold >> >> cheers >> Bruce >> >> >> >> >> On Fri, 1 Jul 2011, Katie Bettencourt wrote: >> >> I'm trying to draw an ROI by selecting the center of activation for a >> particular contrast and then selecting nearby voxels within a certain range >> (for >> example. say 20 >> voxels). Ideally I'd like to select only the voxels within this >> range that are activated by my contrast. However, I can't see how to do >> this, any help >> would be >> appreciated. >> Thanks, >> >> Katie >> >> >> >> >> 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<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. > >
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