# Ukftractography

**URL:** <https://discourse.slicer.org/t/ukftractography/693>\
**Category:** Support\
**Tags:** diffusion, tractography\
**Created:** [July 15, 2017, 6:31pm UTC](https://discourse.slicer.org/t/ukftractography/693 "2017-07-15T18:31:05Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![ElvaChen](https://avatars.discourse-cdn.com/v4/letter/e/a587f6/32.png) [@ElvaChen](https://discourse.slicer.org/u/ElvaChen)\
**Post date:** [July 15, 2017, 6:31pm UTC](https://discourse.slicer.org/t/ukftractography/693/1 "2017-07-15T18:31:05Z")

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Operating system: Linux  
Slicer version: 4.5.0-1

Hi:

I wonder if there is any way to view the saved output of free water fraction (free water imaging volume) in UKF? I use Slicer version 4.5.0-1.

Thanks.

Elva

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**Author:** ![ihnorton](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/ihnorton/32/9_2.png) [@ihnorton](https://discourse.slicer.org/u/ihnorton)\
**Post date:** [July 16, 2017, 12:18pm UTC](https://discourse.slicer.org/t/ukftractography/693/2 "2017-07-16T12:18:37Z")

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Go to Modules-\>`Tractography Display` and select `Color By -> Scalar Value` as below (note: if it does not work, please try a newer version than 4.5, ideally the nightly):

 ![image](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/f/c/fcc8c3f945a54d011f4b37491dfab80b951e7328.png)

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**Author:** ![ElvaChen](https://avatars.discourse-cdn.com/v4/letter/e/a587f6/32.png) [@ElvaChen](https://discourse.slicer.org/u/ElvaChen)\
**Post date:** [July 21, 2017, 3:17pm UTC](https://discourse.slicer.org/t/ukftractography/693/3 "2017-07-21T15:17:52Z")

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Hi Isaiah:

Thanks a lot for the prompt response.  
However, looks like Tractography Display is to show the tractography.  
I was wondering if it is possible to generate the scalar volume of free water maps using UKF or other modules.

Thanks.

Elva

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**Author:** ![ihnorton](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/ihnorton/32/9_2.png) [@ihnorton](https://discourse.slicer.org/u/ihnorton)\
**Post date:** [July 22, 2017, 1:12am UTC](https://discourse.slicer.org/t/ukftractography/693/4 "2017-07-22T01:12:53Z")

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UKF computes these other measures in the process of fitting tractography streamlines, so it doesn’t provide any volumetric output.

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**Author:** ![ElvaChen](https://avatars.discourse-cdn.com/v4/letter/e/a587f6/32.png) [@ElvaChen](https://discourse.slicer.org/u/ElvaChen)\
**Post date:** [July 22, 2017, 8:57am UTC](https://discourse.slicer.org/t/ukftractography/693/5 "2017-07-22T08:57:42Z")

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Dear Isaiah:

Got it. Still appreciate your kind response.

Thanks.

Elva

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**Author:** ![ljod](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/ljod/32/652_2.png) [@ljod](https://discourse.slicer.org/u/ljod)\
**Post date:** [July 22, 2017, 10:19am UTC](https://discourse.slicer.org/t/ukftractography/693/6 "2017-07-22T10:19:04Z")

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If you are interested in free water maps, please contact our colleague Ofer Pasternak for software:

> **[Ofer Pasternak](https://lmi.med.harvard.edu/people/ofer-pasternak)**
>
> Ofer graduated from the Interdisciplinary Program for Outstanding Students at Tel-Aviv University, Israel, where he obtained his B.Sc and PhD in computer science. For his PhD research, he worked on analysis and acquisition of Diffusion MRI, aiming at...