# tckgen fod.nii.gz det_ref_maxlen.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 10 -cutoff 0.3 -nthreads 0 -output_seeds det_ref_maxlen_seeds.txt -quiet -force  (version=3.0.8)
#Track_index,Seed_index,Pos_x,Pos_y,Pos_z,
0,52,-7.19999981,-9.39999962,-0.200000048,
1,52,-7.19999981,-9.39999962,0.799999952,
2,52,-7.19999981,-8.39999962,-0.200000048,
3,52,-7.19999981,-8.39999962,0.799999952,
4,52,-6.19999981,-9.39999962,-0.200000048,
5,52,-6.19999981,-9.39999962,0.799999952,
6,52,-6.19999981,-8.39999962,-0.200000048,
7,52,-6.19999981,-8.39999962,0.799999952,
8,52,-7.19999981,-7.39999962,-0.200000048,
9,52,-7.19999981,-7.39999962,0.799999952,
10,52,-7.19999981,-6.39999962,-0.200000048,
11,52,-7.19999981,-6.39999962,0.799999952,
12,52,-6.19999981,-7.39999962,-0.200000048,
13,52,-6.19999981,-7.39999962,0.799999952,
14,52,-6.19999981,-6.39999962,-0.200000048,
15,52,-6.19999981,-6.39999962,0.799999952,
16,52,-5.19999981,-9.39999962,-0.200000048,
17,52,-5.19999981,-9.39999962,0.799999952,
18,52,-5.19999981,-8.39999962,-0.200000048,
19,52,-5.19999981,-8.39999962,0.799999952,
20,52,-4.19999981,-9.39999962,-0.200000048,
21,52,-4.19999981,-9.39999962,0.799999952,
22,52,-4.19999981,-8.39999962,-0.200000048,
23,52,-4.19999981,-8.39999962,0.799999952,
24,52,-5.19999981,-7.39999962,-0.200000048,
25,52,-5.19999981,-7.39999962,0.799999952,
26,52,-5.19999981,-6.39999962,-0.200000048,
27,52,-5.19999981,-6.39999962,0.799999952,
28,52,-4.19999981,-7.39999962,-0.200000048,
29,52,-4.19999981,-7.39999962,0.799999952,
30,52,-4.19999981,-6.39999962,-0.200000048,
31,52,-4.19999981,-6.39999962,0.799999952,

