# tckgen fod.nii.gz det_ref.tck -algorithm SD_Stream -seed_grid_per_voxel seeds.nii.gz 2 -seed_direction '1,0,0' -mask mask.nii.gz -step 0.2 -angle 30 -minlength 5 -maxlength 80 -cutoff 0.3 -nthreads 0 -output_seeds det_ref_seeds.txt -quiet -force  (version=3.0.8)
#Track_index,Seed_index,Pos_x,Pos_y,Pos_z,
0,71,-7.19999981,-9.39999962,-0.200000048,
1,71,-7.19999981,-9.39999962,0.799999952,
2,177,-7.19999981,-8.39999962,-0.200000048,
3,177,-7.19999981,-8.39999962,0.799999952,
4,66,-6.19999981,-9.39999962,-0.200000048,
5,66,-6.19999981,-9.39999962,0.799999952,
6,172,-6.19999981,-8.39999962,-0.200000048,
7,172,-6.19999981,-8.39999962,0.799999952,
8,169,-7.19999981,-7.39999962,-0.200000048,
9,169,-7.19999981,-7.39999962,0.799999952,
10,184,-7.19999981,-6.39999962,-0.200000048,
11,184,-7.19999981,-6.39999962,0.799999952,
12,164,-6.19999981,-7.39999962,-0.200000048,
13,164,-6.19999981,-7.39999962,0.799999952,
14,179,-6.19999981,-6.39999962,-0.200000048,
15,179,-6.19999981,-6.39999962,0.799999952,
16,61,-5.19999981,-9.39999962,-0.200000048,
17,61,-5.19999981,-9.39999962,0.799999952,
18,167,-5.19999981,-8.39999962,-0.200000048,
19,167,-5.19999981,-8.39999962,0.799999952,
20,56,-4.19999981,-9.39999962,-0.200000048,
21,56,-4.19999981,-9.39999962,0.799999952,
22,162,-4.19999981,-8.39999962,-0.200000048,
23,162,-4.19999981,-8.39999962,0.799999952,
24,159,-5.19999981,-7.39999962,-0.200000048,
25,159,-5.19999981,-7.39999962,0.799999952,
26,174,-5.19999981,-6.39999962,-0.200000048,
27,174,-5.19999981,-6.39999962,0.799999952,
28,154,-4.19999981,-7.39999962,-0.200000048,
29,154,-4.19999981,-7.39999962,0.799999952,
30,169,-4.19999981,-6.39999962,-0.200000048,
31,169,-4.19999981,-6.39999962,0.799999952,

