Ok, thanks! Katie
On Fri, Jul 1, 2011 at 2:54 PM, Bruce Fischl <fis...@nmr.mgh.harvard.edu>wrote: > not really > > On Fri, 1 Jul 2011, Katie Bettencourt wrote: > > Ok, I see it. I'll see what I can do with this, but I guess that means >> there's no way to do it and enter an explicit number of voxels to select >> from that central point? >> Katie >> >> On Fri, Jul 1, 2011 at 2:39 PM, Bruce Fischl <fis...@nmr.mgh.harvard.edu> >> wrote: >> under tools->label in tksurfer (I think) there's an option to dilate >> or erode the boundary (expand or contract) >> >> >> cheers >> Bruce >> On Fri, 1 Jul 2011, Katie Bettencourt wrote: >> >> 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<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<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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