[Tracts][Statistics]

[gx1263...@gmail.com]

Hello Frank,

After fiber tracking in DSI Studio, we may use [Tracts][Statistics] to get quantitative metrics related to the tracks. The metrics may include:

number of tracts 23746

mean length(mm) 77.908

span(mm) 27.1028

diameter(mm) 111.131

radius of end area1(mm) 45.4044

radius of end area2(mm) 44.1995

surface area(mm^2) 357715

end area 1(mm^2) 19704

end area 2(mm^2) 19772

volume(mm^3) 755686

trunk volume(mm^3) 5470

branch volume(mm^3) 750216

curl 2.87453

elongation 0.701048

irregularity 13.1514

irregularity of end area1 0.328694

irregularity of end area2 0.310408

qa 0.312688

nqa 0.236016

jdet 0.890161

dti_fa 0.321457

md 0.737687

ad 0.981534

rd 0.615727

gfa 0.0330575

iso 2.16092

rdi 2.45614

nrdi02L 2.86592e+19

nrdi04L 2.86592e+19

nrdi06L 2.86592e+19

mni_icbm152_t1_tal_nlin_asym_09c 77.6235

mni_icbm152_wm_tal_nlin_asym_09c 0.61884

Could you tell me what these parameters mean or where I can check their meaning?

Looking forward to reading from you,

Sincerely

GAN XING

[Fang-Cheng Yeh]

The details of the shape metrics are documented at
https://www.biorxiv.org/content/10.1101/2020.04.19.049544v1.article-info
The details of the diffusion metrics are documented at
http://dsi-studio.labsolver.org/Manual/diffusion-mri-indices

[gx1263...@gmail.com]

Thanks 
在 2020年8月7日星期五 UTC+8下午11:13:57，Frank Yeh写道：