What do you mean by dilate it?<div><br></div><div>Katie<br><br><div class="gmail_quote">On Fri, Jul 1, 2011 at 2:28 PM, Bruce Fischl <span dir="ltr">&lt;<a href="mailto:fischl@nmr.mgh.harvard.edu">fischl@nmr.mgh.harvard.edu</a>&gt;</span> wrote:<br>

<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">you can draw a boundary between them and also click &quot;up to boundaries&quot; or something like that. Or just click the center and dilate it a few times or some combination of thresholding and dilation. It&#39;s quite flexible<div>

<div></div><div class="h5"><br>
<br>
cheers<br>
Bruce<br>
On Fri, 1 Jul 2011, Katie Bettencourt wrote:<br>
<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Hi Bruce,  <br>
That&#39;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<br>
restrict it by a certain number of voxels from the center of activation.<br>
<br>
Katie<br>
<br>
On Fri, Jul 1, 2011 at 1:55 PM, Bruce Fischl &lt;<a href="mailto:fischl@nmr.mgh.harvard.edu" target="_blank">fischl@nmr.mgh.harvard.edu</a>&gt; wrote:<br>
      Hi Katie,<br>
<br>
      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<br>
      to create an ROI for and do custom fill with &quot;up to functional threshold&quot;. This will floodfill from that point outwards stopping when it reaches vertices that<br>
      are below threshold<br>
<br>
      cheers<br>
      Bruce<br>
<br>
<br>
<br>
<br>
On Fri, 1 Jul 2011, Katie Bettencourt wrote:<br>
<br>
      I&#39;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<br>
      example. say 20<br>
      voxels).  Ideally I&#39;d like to select only the voxels within this range that are activated by my contrast.  However, I can&#39;t see how to do this, any help<br>
      would be<br>
      appreciated.<br>
      Thanks,<br>
<br>
      Katie<br>
<br>
<br>
<br>
<br>
The information in this e-mail is intended only for the person to whom it is<br>
addressed. If you believe this e-mail was sent to you in error and the e-mail<br>
contains patient information, please contact the Partners Compliance HelpLine at<br>
<a href="http://www.partners.org/complianceline" target="_blank">http://www.partners.org/<u></u>complianceline</a> . If the e-mail was sent to you in error<br>
but does not contain patient information, please contact the sender and properly<br>
dispose of the e-mail.<br>
<br>
<br>
<br>
</blockquote>
</div></div><br>_______________________________________________<br>
Freesurfer mailing list<br>
<a href="mailto:Freesurfer@nmr.mgh.harvard.edu">Freesurfer@nmr.mgh.harvard.edu</a><br>
<a href="https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer" target="_blank">https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer</a><br>
<br>
<br>
The information in this e-mail is intended only for the person to whom it is<br>
addressed. If you believe this e-mail was sent to you in error and the e-mail<br>
contains patient information, please contact the Partners Compliance HelpLine at<br>
<a href="http://www.partners.org/complianceline" target="_blank">http://www.partners.org/complianceline</a> . If the e-mail was sent to you in error<br>
but does not contain patient information, please contact the sender and properly<br>
dispose of the e-mail.<br>
<br></blockquote></div><br></div>