# UFK Tractography - Fiber Bundle Selection

**URL:** https://discourse.slicer.org/t/ufk-tractography-fiber-bundle-selection/11406
**Category:** Support
**Tags:** diffusion
**Created:** [May 4, 2020, 6:44pm UTC](https://discourse.slicer.org/t/ufk-tractography-fiber-bundle-selection/11406 "2020-05-04T18:44:10Z")
**Posts on this page:** 1
**Page:** 1

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### Author: ![flavceschi](https://avatars.discourse-cdn.com/v4/letter/f/7ab992/32.png) [@flavceschi](https://discourse.slicer.org/u/flavceschi)
#### Post date: [May 4, 2020, 6:44pm UTC](https://discourse.slicer.org/t/ufk-tractography-fiber-bundle-selection/11406/1 "2020-05-04T18:44:10Z")

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Hello,  
I have to extract several fiber bundles by Multiple-Manual ROI Labeling.

What I am doing after having converted the DICOMs into NRRD is to

1. create a brain mask
2. create a whole-brain UKF tractography using as input label map the brain mask
3. in the editor module I draw with different colors my ROIs.
4. under - UKF Tract - Tract ROI Selection I use as label map the one created in the editor module (step 3), and I use the whole brain tractography created at step 2 as input fiber bundle. I then indicate the inclusion labels separated by a comma

The output gives me again the whole brain fibers and not only the tracts I drew in step 3. Is it because I should add exclusion labels?

(I instead get the tracts I want to extract correctly if I do the same process by creating a whole-brain-tractography from the Tract Seeding module and then do the same step in UKF ROI selection. But I would like to start from the UFK whole brain to have a two-tensor).

Thank you in advance for the help  
F