<div dir="ltr"><div><div><div><div><div>Hi all,<br><br></div>I have a strange problem, I'm sure is easy to solve but I'm stuck on this and I don't find the solution.<br><br></div>I want to calculate the tracks for a ROI, and when I run it I obtain the following message:<br>
<br>tckgen fod.mif tracks_CC1.tck -algorithm SD_STREAM -grad ag140128a_6_HARDI_WT_ref.b -seed_image roi_CC1.mif -mask mask.mif -number 1000<br><br>tckgen [ERROR]: Cannot use image roi_CC1.mif as ROI - image is empty<br><br>
</div>I opened the ROI and it looks ok, and is not "outside" of the fod map. I did the same, for another ROI and it works correctly. I don't know way this ROI has this problem, Somebody can help me? Maybe is due to the location of the ROI and the default parameters? Thanks in advance.<br>
<br></div>Best regards,<br><br></div>Manuel Blesa<br><div><div><div><br></div></div></div></div>