Hi - I need to make a ribbon volume. I have all the necessary surfaces, but I&#39;m lacking an aseg.mgz because the data is monkey. I saw one guy on the list had success by just calling his orig.mgz aseg.mgz. I tried that, and it calculated the left right pial and white distances. Men sadly it segfaulted.<div>
<br></div><div>The program mri_ribbon will give me separate left and white gm ribbons. I combined those, coloured them 3 and 42 and did my level best to fill the wm with the right values, but some bits are wrong.</div><div>
<br></div><div>What I&#39;m actually trying to do is use matt glassers myelin mapping in caret. other things could be wrong than my ribbon estimate.</div><div><br></div><div>If anyone has an idea how to make a good ribbon  without aseg I&#39;d appreciate it. Please bear in mind I may be missing much of what one gets when one runs recon-all. I have thickness, curv, surfaces, filled.mgz, pretesselstion wm.mgz not so much else. The filled.mgz doesn&#39;t fill all non cortex the way the bert ribbon does, so it&#39;s not that useful.<span></span></div>
<div><br></div><div>Thanks,</div><div><br></div><div>Colin</div>