<div dir="ltr">Hi Dorian,<div><br></div><div>Hangyi can elaborate more, but I thought his FA measurement has weighting based on the number of the streamlines.</div><div>Hangyi will follow it up.</div><div><br></div><div>Susumu</div>
</div><div class="gmail_extra"><br><br><div class="gmail_quote">On Thu, Jul 11, 2013 at 2:43 PM, Dorian P. <span dir="ltr"><<a href="mailto:alb.net@gmail.com" target="_blank">alb.net@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">Hi MRIstudio team,<div><br></div><div>I am doing some tractography and getting FA for tracts, but these do not correspond to the average FA of the voxels of the tract. In DTIstudio I use the Statistics button and move FA on the right box to get "Mean of ImgVal". Then I save the tract binary map and the FA map (Analyze format). When I open these images in Matlab and obtain the average FA of the tract, the values are not the same with DTIstudio.</div>
<div><br></div><div>At this point I need to ask how does the "Statistics" button calculate Mean of ImgVal?</div><div><br></div><div>Thank you for this and the previous answers.<br></div>
<div>
<br></div><div>Dorian</div><div>TJU</div><div><br></div><div><br></div></div>
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