<div>Thanks Susumu,</div>
<div> </div>
<div>We have 6 tensor files (Dxx, Dxy, ...) each of them in .img/.hdr</div>
<div>I saw that in DTIstudio it allows saving analyze files into raw .dat format?</div>
<div> </div>
<div>I'm wondering if we know how the principal vector file should look like, I should be able to convert and change the files we have into the format of data DTIstudio can take.</div>
<div> </div>
<div>Could you send me a sample file of pricipal vector that I could determine how the information is laid out so that I can figure out a way to change my files?</div>
<div> </div>
<div>Thanks!</div>
<div>Youngbin</div>
<div><br><br> </div>
<div class="gmail_quote">On Wed, May 19, 2010 at 9:52 PM, susumu mori <span dir="ltr"><<a href="mailto:susumu@mri.jhu.edu">susumu@mri.jhu.edu</a>></span> wrote:<br>
<blockquote style="BORDER-LEFT: #ccc 1px solid; MARGIN: 0px 0px 0px 0.8ex; PADDING-LEFT: 1ex" class="gmail_quote">Hi youngbin,<br><br>The image dimension depends on your data and it's difficult to say what it is. Our MNI space is 181x217x181, but I know that there are several versions of MNI templates with different dimensions.<br>
<br>For the vector map, it unfortunately has to be raw format without header, which is floating point with 3 vector components x D1 x D2 x D3. The software you are using needs to have a way to save the vector file in this raw format.<br>
<br>susumu<br><br>
<div class="gmail_quote">
<div>
<div></div>
<div class="h5">On Wed, May 19, 2010 at 3:15 PM, Youngbin Kwak <span dir="ltr"><<a href="mailto:youngbin@umich.edu" target="_blank">youngbin@umich.edu</a>></span> wrote:<br></div></div>
<blockquote style="BORDER-LEFT: rgb(204,204,204) 1px solid; MARGIN: 0pt 0pt 0pt 0.8ex; PADDING-LEFT: 1ex" class="gmail_quote">
<div>
<div></div>
<div class="h5">
<div>Hello,</div>
<div> </div>
<div>We would like to perform fiber tracking using FA maps created from other programs. FA maps are currently in all in MNI normalized space in analyze format. I've chosen the fiber-tracking option from the file menu of DTIstudio and then a window that says Fiber-tracking options pops up. I chose the continuous tracking using principal ventor and FA map and it brings me to the window where you have to set image parameters. For FA-map, I chose the analyze .img file. for the principal vector, I wasn't sure what I should choose.. Also for image dimension and voxel size, I wasn't sure what what values to put..</div>
<div>Can someone guide me here?</div>
<div> </div>
<div>Thanks!</div>
<div>Youngbin<br>-- <br>Youngbin Kwak M.S.<br>Ph.D. candidate, Neuroscience Graduate Program<br>Cognitive Science & Cognitive Neuroscience Program<br>University of Michigan<br></div><br></div></div>_______________________________________________<br>
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Cognitive Science & Cognitive Neuroscience Program<br>University of Michigan<br>