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personally, I think 0.1 is too low to get reliable (or consistent) fiber tracking results.
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best,<br>
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hangyi<br>
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<div style="direction: ltr;" id="divRpF73212"><font color="#000000" face="Tahoma" size="2"><b>From:</b> mristudio-users-bounces@mristudio.org [mristudio-users-bounces@mristudio.org] on behalf of Prachi Dubey [pxd2010@gmail.com]<br>
<b>Sent:</b> Wednesday, March 06, 2013 12:10 PM<br>
<b>To:</b> DTI Studio, ROI Editor, DiffeoMap Questions/Support<br>
<b>Subject:</b> [Mristudio-users] transverse diffusion parameters<br>
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<div>Hi,</div>
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<div>Any thoughts on how low one could go on FA threshold for tracking without introducing too much noise. I am using FA=0.2, and a lot of my patients have very severely atropic tracts and it is excluding a lot of the data. I can track more fibers if go as
low as 0.1 but that makes me worry if I am introducing tracking error.</div>
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<div>Also what has your experience been with transverse diffusion values, eigen value1 and 2 and 2DFA2-3 and 2DFA1-3. In my dataset they are more sensitive than FA or Trace.
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<div>Any thoughts, comments appreciated. Prachi<br clear="all">
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<div>Prachi Dubey, MD MPH</div>
<div>ph:4109614841</div>
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