Hi all,<br><br>I&#39;m running into a problem where some of my scans have varied brightness between slices. <br>What happens is that this results in heavy banding of the resulting scans, and this creates major problem for <br>
freesurfer to segment out wm because of the variation in signal intensity. <br><br>Intensity normalization doesn&#39;t seem to correct this kind of signal problems. <br><br>I&#39;m wondering what would be a good way to go about correcting this? I&#39;m been doing control points and wm edits, but because the wm intensity is not standarized across the slices, I think it&#39;s just an exercise in futility so far. <br>
<br>I&#39;ve attached a screen shot.<br><br>Thanks!<br><br>- David Qixiang Chen<br><br>