<div dir="ltr"><font face="times new roman, serif" size="4">Hello Cook,</font><div><font face="times new roman, serif" size="4"><br></font></div><div style><font face="times new roman, serif" size="4">Thanks so much for your advice, but I encounter two other problems.</font></div>
<div style><font face="times new roman, serif" size="4"><br></font></div><div style><font face="times new roman, serif" size="4">1. I used command </font></div><div style><p class="" align="left" style="line-height:13pt">
<font size="4"><span lang="EN-US" style="font-family:华文楷体"> </span><span lang="EN-US"><font face="times new roman, serif">"track -inputmodel pico -pdf watson -numpds 3
-iterations 1000 -seedfile lhV1.nii.gz -inputfile
A_QBallPDsWatsonPDFs.Bdouble > tracts.Bfloat"</font></span></font></p><p class="" align="left" style="line-height:13pt"><span lang="EN-US"><font face="times new roman, serif" size="4">to obtain a trackfile which seeded from lhV1，but the tracts file was in total of 1.7 Gb. When I used the command below:</font></span></p>
<p class="" align="left" style="line-height:13pt"><span lang="EN-US"><font face="times new roman, serif" size="4"><span lang="EN-US"> "vtkstreamlines
-colourorient < tracts.Bfloat > tracts.vtk "</span><br></font></span></p><p class="" align="left" style="line-height:13pt"><span lang="EN-US"><span lang="EN-US"><font face="times new roman, serif" size="4">to convert visualize it, it gave me an error information: out of memory. Temporarily, the </font><span style="font-family:'times new roman',serif;font-size:large">RAM </span><font face="times new roman, serif" size="4">of my computer was 8 Gb, was there some way for me to solve this problem? Or is there something wrong with my processing?</font></span></span></p>
<p class="" align="left" style="line-height:13pt"><font face="times new roman, serif" size="4">My seedfile lhV1.nii.gz was obtained by converting a freesurfer automatically generated label using mri_label2vol flag.</font></p>
<p class="" align="left" style="line-height:13pt"><span lang="EN-US"><span lang="EN-US"><font face="times new roman, serif" size="4">2. May I ask you how do you obtain the label file for a roi which you obtained </font></span></span><span style="font-family:'times new roman',serif;font-size:large">from a functional activated brain region and </span><span style="font-family:'times new roman',serif;font-size:large;line-height:13pt">couldn't segment from an atlas? And what kind of label do you use frequently? What's its format?</span></p>
<p class="" align="left" style="line-height:13pt"><span lang="EN-US" style="font-size:14pt;font-family:华文楷体"><span lang="EN-US" style="font-size:14pt"><br></span></span></p></div></div>