<div dir="ltr"><div><div>Hi Aaron<br><br></div>The method for estimating the response function in the new MRtrix package is relatively novel, and although I configured the program as best I could to work on the data I had on hand to test it with, there are quite a number of free parameters in the algorithm that are difficult to configure in order to handle all possible acquisitions.<br>
I'd expect the program to take longer to execute for low b-value data, but it certainly should not be taking 36 hours.<br></div>If possible, I'd appreciate private access to an example problematic data set so that I can see what's going on and hopefully improve the heuristics within dwi2response to better handle these data.<br>
<br>Best regards<br>Rob<br></div><div class="gmail_extra"><br clear="all"><div><div dir="ltr"><br>--<br><br><span style="color:rgb(255,102,0)"><b>Robert Smith, Ph.D</b><br>Research Officer, Imaging Division</span><br><br>
The Florey Institute of Neuroscience and Mental Health<br>Melbourne Brain Centre - Austin Campus<br>245 Burgundy Street<br>Heidelberg Vic 3084<br>Ph: +61 3 9035 7128<br>Fax: +61 3 9035 7301<br><a href="http://www.florey.edu.au/" target="_blank">www.florey.edu.au</a><br>
</div></div>
<br><br><div class="gmail_quote">On Sat, May 24, 2014 at 5:27 AM, <a href="mailto:arswitze@ucalgary.ca">arswitze@ucalgary.ca</a> <span dir="ltr"><<a href="mailto:arswitze@ucalgary.ca" target="_blank">arswitze@ucalgary.ca</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hello mrtrix users,<br>
<br>
I am a new mrtrix user and I am trying to process some diffusion data<br>
using the new mrtrix3 software package. I am currently stuck on the<br>
Response Function Estimation step. I started the dwi2response program<br>
over 36 hours ago and it is still running. Is this normal? Or is<br>
something going wrong?<br>
<br>
The DWI data I am trying to process has 25 directions and a b=850.<br>
<br>
Thank you in advance for all your help,<br>
Aaron Switzer<br>
Graduate Student<br>
University of Calgary<br>
<br>
<br>
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</blockquote></div><br></div>