Hi everybody and thank you for providing the MRIstudio course this week.<div><br></div><div>I have a problem with ROIs. My target is to create two ROIs with an "AND" operation in fiber tracking (need to see fibers that pas from both). The two ROIs will be taken from SPM.</div>
<div><br></div><div>What I did is create the first ROI and reslice it in SPM to the dimensions of the colormap image. I imported the map in ROIeditor and it displays correctly (byte image). Then I created a ROI based on thresholding values. Saved the ROI as binary mask and expected to get the ".dat" and ".map" files. </div>
<div><br></div><div>1. The binary maps produced by ROIeditor do not have a ".map" file. I find only two ".dat" files. One of them is the map file and I can edit it in Wordpad. I renamed this file to ".map" to open it in DTIstudio.</div>
<div><br></div><div>2. DTIstudio does not open the ".map" file anyway, it shows nothing on the screen. However, when I open the raw ".dat" file the fibers are finally shown. Still, this doesn't resolve my problem as I need two rois with an AND operation.</div>
<div><br></div><div>3. I tried saving binary maps both from ROIeditor and DTIstudio but DTIstudio can't open any of them. Beside, DTIstudio doesn't produce the same files as ROIeditor. The extensions are different and rois from DTIstudio have lines for the operation while rois from ROIeditor don't. I tried adding those lines to the ".map" file of ROIeditor, without success.</div>
<div><br></div><div>Can you give me some hint how to perform my task.</div><div><br></div><div>Software versions:</div><div>Roieditor v1.5 - 64bit</div><div>DTIstudio v3.03 Sep 2010 - 64bit</div><div>
<br></div><div>Thank you.</div>